{"title":"Opal","description":null,"products":[{"product_id":"silver-pendant-from-australian-opal-spao41","title":"Silver pendant with Australian Opal - SP\/AO41","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to fix to the jewel: Silver\u003c\/li\u003e\n\u003cli\u003eLocation: Andamooka, Australia\u003c\/li\u003e\n\u003cli\u003eWeight: 2.5g\u003c\/li\u003e\n\u003cli\u003eDimensions: 2.9 x 1.4 x 0.4 cm\u003c\/li\u003e\n\u003cli\u003eSilver purity: 925\/1000 Ag\u003c\/li\u003e\n\u003cli\u003eNote: chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027491000645,"sku":"SP\/AO41","price":119.58,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/72752_silver-pendant-from-australian-opal.jpg?v=1779376763"},{"product_id":"silver-pendant-made-of-dendritic-opal-fp003","title":"Silver pendant with dendritic opal - FP003","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to fix to the jewel: Silver\u003c\/li\u003e\n\u003cli\u003eLocation: Turkey\u003c\/li\u003e\n\u003cli\u003eWeight: 14.9g\u003c\/li\u003e\n\u003cli\u003eDimensions: 4.5 x 3 x 0.5 cm\u003c\/li\u003e\n\u003cli\u003eSilver purity: 925\/1000 Ag\u003c\/li\u003e\n\u003cli\u003eNote: chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027492016453,"sku":"FP003","price":122.16,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/51299_photoroom-004-20250718-182548.jpg?v=1779376775"},{"product_id":"necklace-made-of-ethiopian-precious-opal-45-cm-nah05","title":"Necklace of precious Ethiopian Opal 45 cm - NAH05","description":"\u003cul\u003e\n\u003cli\u003eWeight: 9.7g\u003c\/li\u003e\n\u003cli\u003eLength: 45cm\u003c\/li\u003e\n\u003cli\u003eFaceted stone size: 4.5mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027535401285,"sku":"NAH05","price":439.53,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/65711_necklace-made-of-ethiopian-precious-opal-45-cm.png?v=1779377137"},{"product_id":"owyhee-opal-necklace-45-cm-4mm-nah43","title":"Owyhee Opal necklace 45 cm (4mm) - NAH43","description":"\u003cul\u003e\n\u003cli\u003eWeight: 8.3g\u003c\/li\u003e\n\u003cli\u003eLength: 45 cm\u003c\/li\u003e\n\u003cli\u003eFaceted stone size: 4 mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027536580933,"sku":"NAH43","price":35.55,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/71965-2_owyhee-opal-necklace-45-cm--4mm.jpg?v=1779377141"},{"product_id":"pink-opal-necklace-45-cm-3mm-nah49","title":"Pink Opal necklace 45 cm (3mm) - NAH49","description":"\u003cul\u003e\n\u003cli\u003eWeight: 5.4g\u003c\/li\u003e\n\u003cli\u003eLength: 45 cm\u003c\/li\u003e\n\u003cli\u003eFaceted stone size: 3 mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027537826117,"sku":"NAH49","price":29.09,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/71983-2_pink-opal-necklace-45-cm--3mm.jpg?v=1779377153"},{"product_id":"precious-opal-pendant-pop049","title":"Precious Opal Pendant - P\/OP049","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to set the stone to the jewel: rhodium-plated metal jewellery\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 0.5g\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.5 x 1.1 x 0.5 cm\u003c\/li\u003e\n\u003cli\u003eWarning: Protect your precious opal pendant from water, humidity and chemicals, as opal is sensitive to changes in humidity which can damage its structure\u003c\/li\u003e\n\u003cli\u003eNote: chain NOT included\u003c\/li\u003e\n\u003cli\u003eDETAILED DESCRIPTION\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePendants made of rhodium-plated alloy in a minimalist style combine the beauty of rare natural stones with the strength and brilliance of modern metals. Rhodium plating is a process in which a thin layer of rhodium is applied to the surface of the alloy. This metal is known for its high resistance to scratches, corrosion, and oxidation, ensuring that the jewellery remains shiny and beautiful for a long time. Rhodium-plated alloy therefore combines the aesthetics of silver with even greater durability and brilliance. Advantages of rhodium-plated alloy pendants Durability and long lifespan: rhodium-plated alloy is resistant to scratches and corrosion, ensuring a long life for the jewellery, without oxidizing like silver. Hypoallergenic properties: rhodium is hypoallergenic, making this jewellery suitable even for people with sensitive skin. Jewellery care To keep rhodium-plated alloy pendants beautiful for as long as possible, it is recommended to store them in a dry environment, protect them from chemicals, and clean them regularly with a soft cloth.\u003c\/p\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027537858885,"sku":"P\/OP049","price":42.01,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/59972_photoroom-008-20251013-190150.jpg?v=1779377153"},{"product_id":"precious-opal-pendant-pop048","title":"Precious Opal Pendant - P\/OP048","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to set the stone in the jewel: rhodium-plated metal jewellery\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 0.3g\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.2 x 0.6 x 0.4 cm\u003c\/li\u003e\n\u003cli\u003eWarning: Protect your precious opal pendant from water, humidity, and chemicals, as opal is sensitive to changes in humidity, which can damage its structure\u003c\/li\u003e\n\u003cli\u003eNote: Chain NOT included\u003c\/li\u003e\n\u003cli\u003eDETAILED DESCRIPTION\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePendants made of rhodium-plated alloy in a minimalist style combine the beauty of rare natural stones with the strength and brilliance of modern metals. Rhodium plating is a process in which a thin layer of rhodium is applied to the surface of the alloy. This metal is known for its high resistance to scratches, corrosion, and oxidation, ensuring that the jewel remains shiny and beautiful for a long time. Rhodium-plated alloy thus combines the aesthetics of silver with even greater durability and brilliance. Advantages of rhodium-plated alloy pendants Durability and longevity: Rhodium-plated alloy is resistant to scratches and corrosion, ensuring a long life for the jewel without oxidizing like silver. Hypoallergenic properties: Rhodium is hypoallergenic, making these jewels suitable even for people with sensitive skin. Jewellery care To keep rhodium-plated alloy pendants beautiful for as long as possible, it is recommended to store them in a dry environment, protect them from chemicals, and clean them regularly with a soft cloth.\u003c\/p\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027538088261,"sku":"P\/OP048","price":42.01,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/59969_photoroom-002-20251013-190150.jpg?v=1779377156"},{"product_id":"precious-opal-pendant-pop047","title":"Precious Opal Pendant - P\/OP047","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to fix the stone to the jewel: rhodium plated metal jewellery\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 0.4g\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.4 x 1 x 0.4 cm\u003c\/li\u003e\n\u003cli\u003eWarning: Protect your precious opal pendant from water, moisture, and chemicals, as opal is sensitive to humidity changes that can damage its structure.\u003c\/li\u003e\n\u003cli\u003eNote: Chain NOT included\u003c\/li\u003e\n\u003cli\u003eDETAILED DESCRIPTION\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePendants made of rhodium-plated alloy in a minimalist style combine the beauty of rare natural stones with the strength and brilliance of modern metals. Rhodium plating is a process in which a thin layer of rhodium is applied to the surface of the alloy. This metal is known for its high resistance to scratches, corrosion, and oxidation, ensuring that the jewel remains shiny and beautiful for a long time. Rhodium-plated alloy therefore combines the aesthetic of silver with even greater durability and brilliance. Advantages of rhodium-plated alloy pendants Durability and longevity: Rhodium-plated alloy is resistant to scratches and corrosion, ensuring a long life for the jewel, without oxidizing like silver. Hypoallergenic properties: Rhodium is hypoallergenic, making these jewels suitable even for people with sensitive skin. Jewel care To keep rhodium-plated alloy pendants beautiful for as long as possible, it is advisable to store them in a dry environment, protect them from chemicals, and clean them regularly with a soft cloth.\u003c\/p\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027538121029,"sku":"P\/OP047","price":42.01,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/43595_photoroom-005-20251013-190150.jpg?v=1779377156"},{"product_id":"precious-opal-pendant-pop008","title":"Precious Opal Pendant - P\/OP008","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to set the stone: rhodium plated metal jewellery\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 0.5g\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.7 x 0.6 x 0.5 cm\u003c\/li\u003e\n\u003cli\u003eWarning: Protect your precious opal pendant from water, humidity and chemicals, as opal is sensitive to changes in humidity that can damage its structure\u003c\/li\u003e\n\u003cli\u003eNote: chain NOT included\u003c\/li\u003e\n\u003cli\u003eDETAILED DESCRIPTION\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePendants made of rhodium-plated alloy in a minimalist style combine the beauty of rare natural stones with the strength and brilliance of modern metals. Rhodium plating is a process in which a thin layer of rhodium is applied to the surface of the alloy. This metal is known for its high resistance to scratches, corrosion, and oxidation, ensuring that the jewel remains shiny and beautiful for a long time. Rhodium-plated alloy thus combines the aesthetics of silver with even greater durability and brilliance. Advantages of rhodium-plated alloy pendants Durability and longevity: rhodium-plated alloy is resistant to scratches and corrosion, ensuring a long life for the jewel, without oxidizing like silver. Hypoallergenic properties: rhodium is hypoallergenic, making these jewels suitable even for people with sensitive skin. Jewellery care To keep rhodium-plated alloy pendants beautiful for as long as possible, it is recommended to store them in a dry environment, protect them from chemicals, and clean them regularly with a soft cloth.\u003c\/p\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027538186565,"sku":"P\/OP008","price":29.09,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/14632_precious-opal-pendant.jpg?v=1779377157"},{"product_id":"precious-opal-pendant-pop007","title":"Precious opal pendant - P\/OP007","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to fix the stone to the jewel: stainless steel\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 1g\u003c\/li\u003e\n\u003cli\u003eSize: 3 x 0.9 x 0.4 cm\u003c\/li\u003e\n\u003cli\u003eWarning: Protect your precious opal pendant from water, moisture and chemicals, as opal is sensitive to humidity changes that can damage its structure\u003c\/li\u003e\n\u003cli\u003eNote: chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027538219333,"sku":"P\/OP007","price":83.38,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/12055_precious-opal-pendant.jpg?v=1779377158"},{"product_id":"precious-opal-pendant-pop004","title":"Precious Opal Pendant - P\/OP004","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to fix the stone to the jewel: stainless steel\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 2.6g\u003c\/li\u003e\n\u003cli\u003eDimensions: 3.6 x 1.3 x 1 cm\u003c\/li\u003e\n\u003cli\u003eWarning: Protect your precious opal pendant from water, humidity, and chemicals, as opal is sensitive to changes in humidity that can damage its structure\u003c\/li\u003e\n\u003cli\u003eNote: chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027538284869,"sku":"P\/OP004","price":119.58,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/12046_precious-opal-pendant.jpg?v=1779377158"},{"product_id":"precious-opal-pendant-pop010","title":"Precious Opal Pendant - P\/OP010","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to set the stone in the jewel: acciaio inossidabile and steel\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 3.3g\u003c\/li\u003e\n\u003cli\u003eDimensions: 3.1 x 2.1 x 1.1 cm\u003c\/li\u003e\n\u003cli\u003eWarning: Protect your precious opal pendant from water, moisture, and chemicals, as opal is sensitive to changes in humidity, which can damage its structure\u003c\/li\u003e\n\u003cli\u003eNote: Chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027538809157,"sku":"P\/OP010","price":106.65,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/20875-6_precious-opal-pendant.jpg?v=1779377163"},{"product_id":"precious-opal-pendant-pop011","title":"Precious Opal Pendant - P\/OP011","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to fix the stone to the jewel: stainless steel and steel\u003c\/li\u003e\n\u003cli\u003eLocality: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 2,7g\u003c\/li\u003e\n\u003cli\u003eDimensions: 4 x 1,5 x 0,7 cm\u003c\/li\u003e\n\u003cli\u003eWarning: Protect your precious opal pendant from water, humidity and chemicals, as opal is sensitive to changes in humidity that can damage its structure\u003c\/li\u003e\n\u003cli\u003eNote: chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027538874693,"sku":"P\/OP011","price":106.65,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/20881-7_precious-opal-pendant.jpg?v=1779377164"},{"product_id":"precious-opal-pendant-pop003","title":"Precious Opal Pendant - P\/OP003","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to fix the stone to the jewel: stainless steel\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 2g\u003c\/li\u003e\n\u003cli\u003eDimensions: 2.8 x 1.1 x 0.9 cm\u003c\/li\u003e\n\u003cli\u003eWarning: Protect your precious opal pendant from water, moisture, and chemicals, as opal is sensitive to changes in humidity that can damage its structure\u003c\/li\u003e\n\u003cli\u003eNote: chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027539169605,"sku":"P\/OP003","price":119.58,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/10575-3_precious-opal-pendant.jpg?v=1779377169"},{"product_id":"silver-faceted-precious-opal-pendant-spop158","title":"Faceted precious opal pendant in silver - SP\/OP158","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to set the stone: Silver\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 4.5ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.6 x 0.8 x 0.6 cm\u003c\/li\u003e\n\u003cli\u003eSilver purity: 925\/1000 Ag\u003c\/li\u003e\n\u003cli\u003eCaution: Protect your precious opal pendant from water, humidity, and chemicals, as opal is sensitive to changes in moisture which can damage its structure.\u003c\/li\u003e\n\u003cli\u003eNote: Chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027545329989,"sku":"SP\/OP158","price":101.48,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/75990_silver-faceted-precious-opal-pendant.jpg?v=1779377243"},{"product_id":"silver-faceted-precious-opal-pendant-spop156","title":"Faceted precious opal pendant in silver - SP\/OP156","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to set the stone into the jewel: Silver\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 3.6ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.8 x 0.7 x 0.4 cm\u003c\/li\u003e\n\u003cli\u003eSilver purity: 925\/1000 Ag\u003c\/li\u003e\n\u003cli\u003eCaution: Protect your precious opal pendant from water, humidity, and chemicals, as opal is sensitive to changes in humidity that can damage its structure\u003c\/li\u003e\n\u003cli\u003eNote: Chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027545362757,"sku":"SP\/OP156","price":83.38,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/75984_silver-faceted-precious-opal-pendant.jpg?v=1779377245"},{"product_id":"silver-faceted-precious-opal-pendant-spop157","title":"Faceted precious opal pendant in silver - SP\/OP157","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to set the stone into the jewel: Silver\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 5.8ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.6 x 1 x 0.8 cm\u003c\/li\u003e\n\u003cli\u003eSilver purity: 925\/1000 Ag\u003c\/li\u003e\n\u003cli\u003ePlease note: Protect your precious opal pendant from water, humidity, and chemicals, as opal is sensitive to changes in humidity, which can damage its structure.\u003c\/li\u003e\n\u003cli\u003eNote: Chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027545493829,"sku":"SP\/OP157","price":127.33,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/75987_silver-faceted-precious-opal-pendant.jpg?v=1779377246"},{"product_id":"silver-faceted-precious-opal-pendant-spop147","title":"Faceted precious opal pendant in silver - SP\/OP147","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to set the stone in the jewel: Silver\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 4.9ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.7 x 1 x 0.5 cm\u003c\/li\u003e\n\u003cli\u003eSilver purity: 925\/1000 Ag\u003c\/li\u003e\n\u003cli\u003ePlease note: Protect your precious opal pendant from water, humidity, and chemicals, as opal is sensitive to changes in humidity, which can damage its structure.\u003c\/li\u003e\n\u003cli\u003eNote: Chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027545592133,"sku":"SP\/OP147","price":109.24,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/75957_silver-faceted-precious-opal-pendant.jpg?v=1779377246"},{"product_id":"silver-faceted-precious-opal-pendant-spop155","title":"Faceted Precious Opal Pendant in Silver - SP\/OP155","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to fix the stone to the jewel: Silver\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 4.5ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.6 x 0.9 x 0.5 cm\u003c\/li\u003e\n\u003cli\u003eSilver purity: 925\/1000 Ag\u003c\/li\u003e\n\u003cli\u003eCaution: Protect your precious opal pendant from water, humidity, and chemicals, as opal is sensitive to changes in humidity that can damage its structure\u003c\/li\u003e\n\u003cli\u003eNote: Chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027545624901,"sku":"SP\/OP155","price":101.48,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/75981_silver-faceted-precious-opal-pendant.jpg?v=1779377247"},{"product_id":"silver-faceted-precious-opal-pendant-spop154","title":"Faceted precious opal pendant in silver - SP\/OP154","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to set the stone in the jewel: Silver\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 5.2ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.6 x 0.9 x 0.6 cm\u003c\/li\u003e\n\u003cli\u003eSilver purity: 925\/1000 Ag\u003c\/li\u003e\n\u003cli\u003eCaution: Protect your precious opal pendant from water, humidity, and chemicals, as opal is sensitive to changes in humidity that can damage its structure.\u003c\/li\u003e\n\u003cli\u003eNote: Chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027545657669,"sku":"SP\/OP154","price":115.7,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/75978_silver-faceted-precious-opal-pendant.jpg?v=1779377247"},{"product_id":"silver-faceted-precious-opal-pendant-spop146","title":"Faceted Precious Opal Silver Pendant - SP\/OP146","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to set the stone: Silver\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 3.6ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.3 x 0.7 x 0.5 cm\u003c\/li\u003e\n\u003cli\u003eSilver purity: 925\/1000 Ag\u003c\/li\u003e\n\u003cli\u003ePlease note: Protect your precious opal pendant from water, humidity, and chemicals, as opal is sensitive to changes in humidity, which can damage its structure.\u003c\/li\u003e\n\u003cli\u003eNote: Chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027545755973,"sku":"SP\/OP146","price":83.38,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/75954_silver-faceted-precious-opal-pendant.jpg?v=1779377249"},{"product_id":"silver-faceted-precious-opal-pendant-spop122","title":"Faceted precious opal pendant in silver - SP\/OP122","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to fix the stone to the jewel: Silver\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 4.3 ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.6 x 0.8 x 0.5 cm\u003c\/li\u003e\n\u003cli\u003eSilver purity: 925\/1000 Ag\u003c\/li\u003e\n\u003cli\u003eCaution: Protect your precious opal pendant from water, humidity, and chemicals, as opal is sensitive to changes in humidity, which can damage its structure.\u003c\/li\u003e\n\u003cli\u003eNote: chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027545887045,"sku":"SP\/OP122","price":97.61,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/71485_silver-faceted-precious-opal-pendant.jpg?v=1779377249"},{"product_id":"silver-faceted-precious-opal-pendant-spop145","title":"Faceted Precious Opal Pendant in Silver - SP\/OP145","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to set the stone in the jewel: Silver\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 4.5ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.9 x 0.7 x 0.5 cm\u003c\/li\u003e\n\u003cli\u003eSilver purity: 925\/1000 Ag\u003c\/li\u003e\n\u003cli\u003eCaution: Protect your precious opal pendant from water, humidity, and chemicals, as opal is sensitive to changes in humidity, which can damage its structure.\u003c\/li\u003e\n\u003cli\u003eNote: Chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027545854277,"sku":"SP\/OP145","price":101.48,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/75951_silver-faceted-precious-opal-pendant.jpg?v=1779377249"},{"product_id":"silver-faceted-precious-opal-pendant-spop121","title":"Faceted precious opal pendant in silver - SP\/OP121","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to set the stone into the jewel: Silver\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 4.5ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.5 x 1 x 0.6 cm\u003c\/li\u003e\n\u003cli\u003eSilver purity: 925\/1000 Ag\u003c\/li\u003e\n\u003cli\u003eCaution: Protect your precious opal pendant from water, humidity, and chemicals, as opal is sensitive to changes in humidity, which can damage its structure\u003c\/li\u003e\n\u003cli\u003eNote: chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027546050885,"sku":"SP\/OP121","price":101.48,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/71482_silver-faceted-precious-opal-pendant.jpg?v=1779377250"},{"product_id":"silver-faceted-precious-opal-pendant-spop120","title":"Faceted Precious Opal Pendant in Silver - SP\/OP120","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to fix the stone to the jewel: Silver\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 8.2ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 2.5 x 0.9 x 0.6 cm\u003c\/li\u003e\n\u003cli\u003eSilver purity: 925\/1000 Ag\u003c\/li\u003e\n\u003cli\u003eCaution: Protect your precious opal pendant from water, humidity, and chemicals, as opal is sensitive to changes in humidity, which can damage its structure\u003c\/li\u003e\n\u003cli\u003eNote: chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027546345797,"sku":"SP\/OP120","price":248.85,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/71479_silver-faceted-precious-opal-pendant.jpg?v=1779377252"},{"product_id":"silver-faceted-precious-opal-pendant-spop108","title":"Faceted precious opal pendant in silver - SP\/OP108","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to fix the stone to the jewel: Silver\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 5.6ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.8 x 1.1 x 0.5 cm\u003c\/li\u003e\n\u003cli\u003eSilver purity: 925\/1000 Ag\u003c\/li\u003e\n\u003cli\u003eCaution: Protect your precious opal pendant from water, humidity and chemicals, as opal is sensitive to changes in humidity which can damage its structure\u003c\/li\u003e\n\u003cli\u003eNote: Chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027547754821,"sku":"SP\/OP108","price":145.44,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/71443_silver-faceted-precious-opal-pendant.jpg?v=1779377254"},{"product_id":"silver-faceted-precious-opal-pendant-spop110","title":"Faceted Precious Opal Pendant in Silver - SP\/OP110","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to set the stone: Silver\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 5.7ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 2.1 x 1 x 0.4 cm\u003c\/li\u003e\n\u003cli\u003eSilver purity: 925\/1000 Ag\u003c\/li\u003e\n\u003cli\u003eCaution: Protect your precious opal pendant from water, humidity, and chemicals, as opal is sensitive to changes in humidity, which can damage its structure\u003c\/li\u003e\n\u003cli\u003eNote: Chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027547722053,"sku":"SP\/OP110","price":193.27,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/71449_silver-faceted-precious-opal-pendant.jpg?v=1779377254"},{"product_id":"silver-faceted-precious-opal-pendant-spop109","title":"Faceted Precious Opal Pendant in Silver - SP\/OP109","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to fix the stone to the jewel: Silver\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 3.6ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.7 x 0.9 x 0.4 cm\u003c\/li\u003e\n\u003cli\u003eSilver purity: 925\/1000 Ag\u003c\/li\u003e\n\u003cli\u003eCaution: Protect your precious opal pendant from water, moisture, and chemicals, as opal is sensitive to changes in humidity that can damage its structure\u003c\/li\u003e\n\u003cli\u003eNote: Chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027547853125,"sku":"SP\/OP109","price":93.72,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/71446_silver-faceted-precious-opal-pendant.jpg?v=1779377255"},{"product_id":"silver-faceted-precious-opal-pendant-spop029","title":"Faceted precious opal pendant in silver - SP\/OP029","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to fix the stone to the jewel: Silver\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 3.6ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.5 x 0.9 x 0.4 cm\u003c\/li\u003e\n\u003cli\u003eSilver purity: 925\/1000 Ag\u003c\/li\u003e\n\u003cli\u003eCaution: Protect your precious opal pendant from water, humidity, and chemicals, as opal is sensitive to changes in humidity, which can damage its structure\u003c\/li\u003e\n\u003cli\u003eNote: Chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027548541253,"sku":"SP\/OP029","price":114.41,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/40466_silver-faceted-precious-opal-pendant.jpg?v=1779377255"},{"product_id":"silver-faceted-precious-opal-pendant-spop028","title":"Faceted Precious Opal Pendant in Silver - SP\/OP028","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to set the stone in the jewel: Silver\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 0.8g = 4.1ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.7 x 0.7 x 0.4 cm\u003c\/li\u003e\n\u003cli\u003eSilver purity: 925\/1000 Ag\u003c\/li\u003e\n\u003cli\u003eCaution: Protect your precious opal pendant from water, humidity and chemicals, as opal is sensitive to changes in humidity, which can damage its structure\u003c\/li\u003e\n\u003cli\u003eNote: Chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027548574021,"sku":"SP\/OP028","price":135.74,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/40463_photoroom-007-20250323-194418.jpg?v=1779377256"},{"product_id":"silver-faceted-precious-opal-pendant-spop027","title":"Faceted Precious Opal Pendant in Silver - SP\/OP027","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to fix the stone to the jewel: Silver\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 1.2g = 6ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.8 x 1.2 x 0.4 cm\u003c\/li\u003e\n\u003cli\u003eSilver purity: 925\/1000 Ag\u003c\/li\u003e\n\u003cli\u003eCaution: Protect your precious opal pendant from water, moisture, and chemicals, as opal is sensitive to changes in humidity that can damage its structure\u003c\/li\u003e\n\u003cli\u003eNote: chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027548606789,"sku":"SP\/OP027","price":193.27,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/40460_photoroom-003-20250323-194418.jpg?v=1779377256"},{"product_id":"precious-opal-in-box-welo-ethiopia-op163","title":"Precious Opal in a box – Welo, Ethiopia - OP163","description":"\u003cul\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eTotal weight (with box): 10.7g\u003c\/li\u003e\n\u003cli\u003ePackaging: clear plastic box (5.8 x 3.8 x 1.6 cm)\u003c\/li\u003e\n\u003cli\u003eDETAILED DESCRIPTION\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePrecious Welo opals – Ethiopian gemstones with vibrant play of color\nPrecious opals from the Welo region of Ethiopia are considered among the most beautiful and highest quality in the world. They are known for their unique play of color and high transparency, making them highly prized among jewelers and collectors. Most Welo opals are hydrophane, meaning they can absorb water. When they do, they can become more transparent and intensify their colors, but they are also more susceptible to cracking due to changes in humidity.\nCharacteristics of Welo opals\nThese opals display a vibrant, rainbow-like play of color that changes with the viewing angle. This effect is caused by the diffraction of light on tiny silica spheres in the stone's structure. Their transparency ranges from clear to opaque, with clearer pieces emphasizing optical effects. The color range includes white, yellow, orange, red, green, blue, and violet tones. Their Mohs hardness is between 5.5 and 6.5, requiring careful handling to prevent damage.\nExtraction and processing\nWelo opals are primarily mined in northern Ethiopia. The first discoveries date back to the 1990s, but global interest surged around 2008 when their quality and color range gained worldwide attention. These opals soon rivaled traditional Australian opals due to their vibrant hues. Once extracted, the stones are cut, shaped, and polished to best enhance their natural beauty.\nCare instructions\nWelo opals are sensitive to temperature and humidity fluctuations, which can cause cracking or color fading. They must be protected from extreme conditions. For cleaning, use only a slightly damp cloth. Avoid chemicals or ultrasonic cleaners, which can damage the surface and internal structure. Store opals in a dry and safe place to prevent moisture or impact.\nMarket and value\nWelo opals have quickly gained recognition for their affordability and extraordinary play of color. Prices vary based on quality, size, and transparency. The most exceptional stones, with vibrant color and high luster, often fetch premium prices on the international market among collectors and jewelers.\u003c\/p\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58028008210757,"sku":"OP163","price":16.16,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/29714_photoroom-20250102-151725.jpg?v=1779379096"},{"product_id":"precious-opal-cabochon-dubniky-slovakia-dopk03","title":"Precious opal – Cabochon – Dubniky, Slovakia - DOPK03","description":"\u003cul\u003e\n\u003cli\u003eLocation: Dubniky, Slovakia\u003c\/li\u003e\n\u003cli\u003eWeight: 0.6g = 3.2ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.4 x 0.8 x 0.4 cm\u003c\/li\u003e\n\u003cli\u003eDETAILED DESCRIPTION\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePrecious Opals from Dubniky in Slovakia are considered one of the rarest and most beautiful gemstones in the world. This exceptional stone was formed millions of years ago during post-volcanic activity, when the specific chemical and physical conditions necessary for its formation were met in a volcano. Even the slightest change in these conditions could have prevented the formation of such a rare gemstone. Dubniky Opals stand out for their colour, where light passing through the specific microstructure of the stone creates a breathtaking optical phenomenon, which the human eye perceives as moving colour rays. The body of the stone is usually white or translucent, which further accentuates its colour play.\nThe history of Opal mining in Dubnik dates back to the 16th century, when Emperor Rudolf II issued a permit for their search. Mining became so important that interest in Opals skyrocketed and the precious stones were sought after by European nobility and rulers. Among the famous personalities who owned jewellery with Opals from Dubnica were Maria Theresa, Napoleon Bonaparte, King Louis XVIII, Empress Elisabeth of Bavaria (Sissi) and Queen Victoria. The historical significance of these gems is evidenced by the price that the Opals achieved - the value often exceeded the price of 100 grams of pure Gold for 1 carat of Opal. The British Royal Family, for example, paid the equivalent of seven million euros for a single Opal.\nThe heyday of Opal mining in Dubnik occurred between 1830 and 1896. Although Opals were discovered in Australia in the mid-19th century, Dubnik Opals retained their prestige and remained the most sought-after Opals in the world. Their uniqueness was heightened after the tragedy of 1950, when a valuable collection of more than 366,000 Opals was destroyed in a museum fire, further adding to their rarity.\nNowadays, deep mining is no longer taking place in Dubnik, but individuals continue to uncover rocks and search for Opals by hand. These stones are still highly valued by collectors and jewellers for their rarity and unique beauty. Despite its high cost, the Dubnica Opal retains its status as an exceptional investment, and its value continues to rise due to limited natural reserves and increasing demand.\nPrecious Opals are distinguished from common synthetic imitations by their long history and origin from Exclusive localities such as Dubnik. While synthetic Opals can lose their colour and quality, genuine Opals from Dubnik are known for their stable and enduring beauty.\u003c\/p\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58028008276293,"sku":"DOPK03","price":1583.59,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/25907-1_precious-opal---cabochon---dubniky--slovakia.jpg?v=1779379097"},{"product_id":"australian-opal-113ct-cabochon-andamooka-australia-ao009","title":"Australian Opal 11.3ct – Cabochon – Andamooka, Australia - AO009","description":"\u003cul\u003e\n\u003cli\u003eLocation: Andamooka, Australia\u003c\/li\u003e\n\u003cli\u003eWeight: 2.2g = 11.3ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 2.1 x 1.3 x 0.5 cm\u003c\/li\u003e\n\u003cli\u003eDETAILED DESCRIPTION\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAustralian opal is renowned worldwide as the most important source of high-quality opals. The quality of Australian opals is primarily due to their intense and pure play of color. Thanks to specific formation conditions, they often display vibrant and highly contrasting hues. This diversity is reflected in the numerous varieties of opals offered by Australia: from black and boulder opals to crystal, white, and matrix opals. Australian opals are significantly more durable and stable than many opals from other locations. Their lower natural water content increases resistance to changes in temperature and humidity, reducing the risk of cracking or drying out and making them ideal for everyday use in jewelry. Formation Australian opals generally form in sedimentary rocks such as sandstones and clays found in vast basins, for example, the Great Artesian Basin, an enormous underground water system that extends over much of the Australian interior. Silica-rich water gradually penetrates small cracks or pores in the rock. When this water evaporates or drains away, thin layers of silica remain in the cavities and can slowly transform into opal. Microscopic spheres of silicon dioxide (silica) play a fundamental role: they arrange themselves in a regular three-dimensional structure similar to a crystal. This configuration creates the characteristic \"play of color,\" the iridescent effect visible in opal when light hits it. The color and intensity of this effect depend on the size and arrangement of these spheres. Deposits Andamooka is a small mining town in South Australia located approximately 600 kilometers north of Adelaide. It lies near the salt lake Lake Torrens, in a landscape characterized by an arid climate and harsh conditions. However, in the 1930s, rich opal veins were discovered here, making Andamooka one of Australia's oldest opal mining fields. History Although Andamooka is not as famous as Coober Pedy or Lightning Ridge, opal mining here has a long tradition. Many mines are still family-run and use manual labor or small machinery. In the past, Andamooka, like other Australian mining fields, attracted adventurers seeking precious opal veins and the chance to make a fortune under extreme conditions. Types of Australian Opal Black Opal – the rarest and most valuable variety, especially famous for the Lightning Ridge deposit in New South Wales. It features a dark base (black, grey, or dark blue) that enhances the play of color. Black opals often show the most intense color spectrum, including red, green, blue, and purple. Boulder Opal – primarily mined in Queensland. It forms when opal fills thin veins in iron-rich sandstones or other host rocks. This variety often retains part of the original rock, creating a contrasting base. Boulder opals can have darker tones and thus display a lively play of color similar to that of black opals. Crystal Opal – characterized by a transparent or translucent base. In its rough state, it can appear almost colorless, but the iridescence becomes evident through a crystalline or milky base. Crystal Opals are found throughout Australia, with larger quantities coming from Coober Pedy. White Opal (Light Opal) – this variety has a white or milky white base. It can display brilliant colors as much as black opals, but the light background tends to attenuate the visual contrast, making the effect less intense. White opals are particularly common in Coober Pedy and generally more accessible than black or boulder opals. Matrix Opal – a particular variety where opal is embedded in a porous rock, such as sandstone or ironstone. After impregnation treatments, the colors can become much more intense as the dark substrate accentuates the opal's play of color. Andamooka is especially famous for these matrix opals, called Andamooka Matrix, which after treatment can resemble rare black opals from other locations. Value Andamooka opals are particularly valued for their relatively affordable prices and rich color patterns. However, high-quality specimens can reach high values, especially those that display an intense play of color or particularly spectacular patterns, such as the harlequin pattern.\u003c\/p\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58028008440133,"sku":"AO009","price":73.04,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/33251-5_photoroom-025-20250319-094040.jpg?v=1779379098"},{"product_id":"ethiopian-smoky-black-opal-cabochon-welo-ethiopia-okc002","title":"Ethiopian Smoky Black Opal – Cabochon – Welo, Ethiopia - OKC002","description":"\u003cul\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 3g = 15.3ct\u003c\/li\u003e\n\u003cli\u003eSize: 2.5 x 1.6 x 0.8 cm\u003c\/li\u003e\n\u003cli\u003eNote: These natural precious Opals have undergone smoke treatment, which gave them this attractive dark appearance that further enhances their play of color.\u003c\/li\u003e\n\u003cli\u003eDETAILED DESCRIPTION\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eCabochons cut from Ethiopian opals are particularly valued in the jewelry industry because this type of cut enhances the stone's internal opalescent effects and contributes to greater overall stability.\nA cabochon cut has a domed and rounded top without facets, while the bottom is usually flat or slightly concave. This shape allows light to spread across the gently curved surface from multiple angles, effectively enhancing the opal's iridescent play of color and distributing it evenly. At the same time, the smooth, rounded edges protect the stone from mechanical damage, which is particularly important for opals due to their lower hardness. For hydrophane opals, this cut also offers a practical advantage—it helps to reduce internal stresses in the stone, lowering the risk of fracture when the stone absorbs water.\nEthiopian cabochons display a wide range of colors—from light, milky white, through yellow and orange tones, to intense red and green flashes. Many stones also show rare blue or purple plays of color. Thanks to the cabochon shape, these colors flow smoothly over the domed surface.\u003c\/p\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58028008538437,"sku":"OKC002","price":1408.43,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/6513_ethiopian-smoky-black-opal---cabochon---welo--ethiopia.jpg?v=1779379100"},{"product_id":"silver-faceted-precious-opal-pendant-spop024","title":"Faceted precious opal pendant in silver - SP\/OP024","description":"\u003cul\u003e\n\u003cli\u003eMaterial used to set the stone in the jewel: Silver\u003c\/li\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 0.9g = 4.8ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.5 x 1.1 x 0.5 cm\u003c\/li\u003e\n\u003cli\u003eSilver purity: 925\/1000 Ag\u003c\/li\u003e\n\u003cli\u003eWarning: Protect your precious opal pendant from water, humidity and chemicals, as opal is sensitive to changes in humidity which can damage its structure.\u003c\/li\u003e\n\u003cli\u003eNote: Chain NOT included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58028008571205,"sku":"SP\/OP024","price":210.07,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/40451_photoroom-002-20250321-094014.jpg?v=1779379101"},{"product_id":"fire-opal-cabochon-queretaro-mexico-ohk02","title":"Fire Opal – Cabochon – Queretaro, Mexico - OHK02","description":"\u003cul\u003e\n\u003cli\u003eLocation: Queretaro, Mexico\u003c\/li\u003e\n\u003cli\u003eWeight: 4.3g\u003c\/li\u003e\n\u003cli\u003eDimensions: 2.4 x 1.4 x 0.9 cm\u003c\/li\u003e\n\u003cli\u003eDETAILED DESCRIPTION\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFire opals, primarily from Mexico, are a particular variety of mineral known for their vibrant colors in shades of red, orange, yellow, and sometimes green. These colors are caused by the presence of iron in the opal's mineral structure. This gemstone is an amorphous silica with a variable water content ranging between 3 and 10% by weight, rarely up to 21%. Mexico is one of the main sources of fire opals, especially due to the mines in the Querétaro area, discovered in 1835 and still productive today. In this region, opals are extracted from volcanic rocks. Extraction takes place both on the surface and in deeper layers, allowing for high-quality crystals to be obtained. In addition to Querétaro, important deposits are found in the states of Hidalgo, Guerrero, Michoacán, Jalisco, Chihuahua, and San Luis Potosí. Smaller deposits are also present in other nations such as the United States (Oregon), Guatemala, Australia, and Canada. Many fire opals display an effect called \"opalescence,\" which is a play of colors created by the dispersion of light within the gemstone. History and Culture Fire opals have a long history in Mexico and were highly valued by pre-Columbian civilizations such as the Aztecs and Mayans. These cultures considered opals sacred stones and used them in rituals and jewelry. Even today, fire opals are highly sought after and are often used in luxury jewelry. Uses Fire opals are very popular in the jewelry industry due to their beautiful colors and optical effects. They are often set in rings, earrings, necklaces, and other ornaments. Due to their beauty and rarity, they are also appreciated by collectors. Care and Maintenance Fire opals are sensitive to changes in temperature and humidity, which can affect their stability and appearance. It is advisable to avoid sudden temperature changes, not expose opals to excessive humidity or dryness, and clean them with a soft cloth, avoiding chemicals that could damage their surface.\u003c\/p\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58028008669509,"sku":"OHK02","price":1615.91,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/21283_photoroom-003-20240914-190729.jpg?v=1779379102"},{"product_id":"opal-bohouskovice-cz-opl011","title":"Opal – Bohouskovice, CZ - OPL011","description":"\u003cul\u003e\n\u003cli\u003eLocation: Bohouskovice, Czech Republic\u003c\/li\u003e\n\u003cli\u003eWeight: 49g\u003c\/li\u003e\n\u003cli\u003eSize: 5 x 3.5 x 1.5 cm\u003c\/li\u003e\n\u003cli\u003ePolished on one side\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58028008898885,"sku":"OPL011","price":31.67,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/14926_opal---bohouskovice--cz.jpg?v=1779379107"},{"product_id":"indonesian-opal-88ct-cabochon-indonesia-io016","title":"Indonesian Opal 8.8ct – Cabochon – Indonesia - IO016","description":"\u003cul\u003e\n\u003cli\u003eLocation: Indonesia\u003c\/li\u003e\n\u003cli\u003eWeight: 1.7g = 8.8ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 2.4 x 1.5 x 0.2 cm\u003c\/li\u003e\n\u003cli\u003eDETAILED DESCRIPTION\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIndonesian opals are primarily found on the islands of Java and Borneo, with smaller deposits also occurring in Sumatra. Compared to the renowned Australian mining areas, these stones are less widespread. They are mostly of volcanic origin, formed where silicate-rich solutions are deposited in rock fissures in regions of intense volcanic activity.\nTheir colors can range from milky white or grayish tones to dark, sometimes almost black, shades. Under certain lighting conditions, some specimens display a subtle iridescent play of colors. So-called \"wood opals,\" which form when ancient wood is permeated and fossilized, are also quite common. These often preserve visible organic patterns from the original material.\nOpal mining in Indonesia is not as extensive as in some other countries, which partly explains the lower global awareness of these stones. Extraction is frequently done by hand, with minimal mechanization, and many specimens are subsequently cut and polished.\nIndonesian opals are valued mainly for their exotic origin. They are rarely exported in large quantities, which makes them a rare and sought-after addition to collectors' portfolios.\u003c\/p\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58028009161029,"sku":"IO016","price":96.96,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/38471-8_photoroom-008-20250319-095539.jpg?v=1779379113"},{"product_id":"australian-black-opal-03ct-cabochon-lightning-ridge-australia-ao016","title":"Australian Black Opal 0.3ct – Cabochon – Lightning Ridge, Australia - AO016","description":"\u003cul\u003e\n\u003cli\u003eLocation: Lightning Ridge, Australia\u003c\/li\u003e\n\u003cli\u003eWeight: 0.06g = 0.3ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 0.53 x 0.3 x 0.22 cm\u003c\/li\u003e\n\u003cli\u003eDETAILED DESCRIPTION\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAustralian opal is renowned worldwide as the most important source of high-quality opals. The quality of Australian opals is primarily due to their intense and pure play-of-color. Thanks to specific formation conditions, they often display vivid and contrasting hues. This variety is reflected in the numerous types of opal found in Australia — from black and boulder opals to crystal, white, and matrix opals. Australian opals are notably more durable and stable than many opals from other locations. Their naturally lower water content increases their resistance to temperature fluctuations and humidity changes, reducing the risk of cracking or drying out, making them ideal for everyday use in jewelry. Formation Australian opals typically form in sedimentary rocks such as sandstones and clays, found in large geological basins (e.g., the Great Artesian Basin, a vast underground water system covering much of Australia's interior). Silica-rich water gradually penetrates small cracks and pores in the rock. As the water evaporates or drains, thin layers of silica remain in the cavities and can transform into opal. Microscopic spheres of silicon dioxide (silica) play a fundamental role: they arrange themselves in a regular three-dimensional, crystal-like structure. This arrangement creates the characteristic \"play-of-color,\" the iridescent effect visible when light strikes the opal. The color and intensity of this effect depend on the size and arrangement of the spheres. Deposits Lightning Ridge is a legendary opal field located in the Australian state of New South Wales, approximately 770 kilometers northwest of Sydney. This area is particularly famous for the so-called black opals, considered among the rarest and most valuable varieties in the world. History Mining activity in this area dates back to the late 19th century, but the true boom began in the early 20th century when explorers discovered opal-bearing layers with striking color effects. The name \"Lightning Ridge\" is linked to a legend that a shepherd and his flock died on a hill during a storm, struck by lightning. Reality or legend, this story gave the place a suggestive and memorable name. Types of Australian Opals Black Opal The rarest and most valuable type of opal, most famous for the deposits around Lightning Ridge. It possesses a dark body tone (black, gray, or dark blue) that intensifies the play-of-color. Black opals often show the most intense color range, including red, green, blue, and purple. Boulder Opal Mined primarily in northeastern Queensland. It forms when opal fills thin veins in iron-rich sandstone or other host rocks. This variety often retains part of the original rock, creating a contrasting base. Boulder opals can have dark body tones and display vivid play-of-color similar to black opals. Crystal Opal Characterized by a translucent or transparent body tone. Sometimes in its rough state, it may show little color, but once cut, it reveals prismatic flashes through a transparent or milky background. Crystal opals are found throughout Australia, with significant quantities coming from locations such as Coober Pedy. White Opal (Light Opal) This variety possesses a white or milky-white body tone. It can display colors as vibrant as those of black opals, but they generally appear less intense because the light background reduces visual contrast. White opals are particularly common in Coober Pedy and are more accessible than black or boulder opals. Matrix Opal A special variety where opal is found within porous rocks such as sandstone or ironstone. After impregnation treatments, the colors can become much more intense due to the contrast created by the dark matrix. Andamooka is famous for these matrix opals, called Andamooka Matrix, which after treatment can resemble the rare black opals from other areas. Value The prices of black opals from Lightning Ridge can reach astronomical figures, depending on their size, saturation, variety of colors, pattern arrangement, and purity of the stone. The rarest specimens, especially those with a predominance of red or many bright hues, are considered among the most expensive gemstones in the world.\u003c\/p\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58028009193797,"sku":"AO016","price":61.41,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/41537_photoroom-001-20250402-005902.jpg?v=1779379113"},{"product_id":"australian-black-opal-055ct-cabochon-lightning-ridge-australia-ao025","title":"Australian black Opal 0.55ct – Cabochon – Lightning Ridge, Australia - AO025","description":"\u003cul\u003e\n\u003cli\u003eLocation: Lightning Ridge, Australia\u003c\/li\u003e\n\u003cli\u003eWeight: 0.11g = 0.55ct\u003c\/li\u003e\n\u003cli\u003eSize: 0.71 x 0.4 x 0.23 cm\u003c\/li\u003e\n\u003cli\u003eDETAILED DESCRIPTION\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAustralian Opal is renowned worldwide as the most important source of high-quality opals. The quality of Australian opals is primarily due to their intense and pure play-of-color. Thanks to specific formation conditions, they often display vivid and contrasting hues. This variety is reflected in the many types of opal found in Australia — from black and boulder opals to crystal, white, and matrix opals. Australian opals are significantly more durable and stable than many opals from other locations. Their naturally lower water content increases resistance to temperature fluctuations and humidity changes, reducing the risk of cracking or drying out and making them ideal for daily use in jewelry. Formation Australian opals typically form in sedimentary rocks such as sandstone and clay, found in large geological basins (e.g., the Great Artesian Basin, a vast underground water system covering much of Australia's interior). Silica-rich water gradually penetrates small cracks and pores in the rock. As the water evaporates or drains away, thin layers of silica remain in the cavities and can transform into opal. Microscopic spheres of silicon dioxide (silica) play a fundamental role: they arrange themselves in a regular three-dimensional, crystal-like structure. This arrangement creates the characteristic \"play-of-color,\" the iridescent effect visible when light strikes the opal. The color and intensity of this effect depend on the size and arrangement of the spheres. Deposits Lightning Ridge is a legendary opal field located in the Australian state of New South Wales, approximately 770 kilometers northwest of Sydney. This area is particularly famous for its so-called black opals, considered among the rarest and most valuable varieties in the world. History Mining activity in this area dates back to the late 19th century, but the real boom began in the early 20th century when explorers discovered opal-bearing layers with astonishing color effects. The name \"Lightning Ridge\" is linked to a legend that a shepherd and his flock died on a ridge during a storm, struck by lightning. Reality or legend, this story gave the place a suggestive and memorable name. Types of Australian Opals Black Opal The rarest and most valuable type of opal, famous especially for the deposits around Lightning Ridge. It has a dark body tone (black, grey, or dark blue) which intensifies the play-of-color. Black opals often display the most intense color range, including red, green, blue, and purple. Boulder Opal Mined primarily in northeastern Queensland. It forms when opal fills thin veins present in iron-rich sandstone or other host rocks. This variety often retains part of the original rock, creating a contrasting base. Boulder opals can have dark tones and display vibrant play-of-color similar to black opals. Crystal Opal Characterized by a translucent or transparent body tone. Sometimes in its rough state, it may show little color, but once cut, it reveals prismatic flashes through a transparent or milky background. Crystal opals are found throughout Australia, with significant quantities coming from locations such as Coober Pedy. White Opal (Light Opal) This variety has a white or milky-white body tone. It can display colors as vibrant as those of black opals, but they generally appear less intense because the light background reduces visual contrast. White opals are particularly common in Coober Pedy and are more accessible than black or boulder opals. Matrix Opal A special variety where opal is found within porous rocks such as sandstone or ironstone. After impregnation treatments, the colors can become much more intense due to the contrast created by the dark matrix. Andamooka is famous for these matrix opals, called Andamooka Matrix, which after treatment can resemble the rare black opals from other areas. Value The prices of black opals from Lightning Ridge can reach astronomical figures, depending on their size, saturation, variety of colors, pattern arrangement, and purity of the stone. The rarest specimens, especially those with a predominance of red or many bright hues, are considered among the most expensive gemstones in the world.\u003c\/p\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58028009390405,"sku":"AO025","price":180.98,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/41564_photoroom-010-20250402-202523.jpg?v=1779379116"},{"product_id":"australian-black-opal-05ct-cabochon-lightning-ridge-australia-ao018","title":"Australian Black Opal 0.5ct – Cabochon – Lightning Ridge, Australia - AO018","description":"\u003cul\u003e\n\u003cli\u003eLocation: Lightning Ridge, Australia\u003c\/li\u003e\n\u003cli\u003eWeight: 0.1g = 0.5ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 0.6 x 0.34 x 0.27 cm\u003c\/li\u003e\n\u003cli\u003eDETAILED DESCRIPTION\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAustralian Opal is renowned worldwide as the most important source of high-quality opals. The quality of Australian opals is mainly due to their intense and pure play-of-color. Thanks to specific formation conditions, they often display vivid and contrasting hues. This variety is reflected in the numerous types of opal found in Australia — from black and boulder opals to crystal, white, and matrix opals. Australian opals are notably more durable and stable than many opals from other locations. Their naturally lower water content increases resistance to temperature fluctuations and humidity changes, reducing the risk of cracking or drying out and making them ideal for everyday use in jewelry. Formation Australian opals typically form in sedimentary rocks such as sandstones and clays, found in large geological basins (e.g., the Great Artesian Basin, a vast underground water system covering much of Australia's interior). Silica-rich water gradually penetrates small cracks and pores in the rock. As the water evaporates or drains away, thin layers of silica remain in the cavities and can transform into opal. Microscopic spheres of silicon dioxide (silica) play a fundamental role: they arrange themselves in a regular three-dimensional crystal-like structure. This arrangement creates the characteristic \"play-of-color,\" the iridescent effect visible when light strikes the opal. The color and intensity of this effect depend on the size and arrangement of the spheres. Deposits Lightning Ridge is a legendary opal field located in the Australian state of New South Wales, approximately 770 kilometers northwest of Sydney. This area is particularly famous for the so-called black opals, considered among the rarest and most valuable varieties in the world. History Mining activity in this area dates back to the late 19th century, but the real boom began in the early 20th century when explorers discovered layers containing opals with surprising color effects. The name \"Lightning Ridge\" is linked to a legend that a shepherd and his flock died on a hill during a storm, struck by lightning. Reality or legend, this story gave the place a suggestive and memorable name. Types of Australian Opals Black Opal The rarest and most valuable type of opal, famous mainly for the deposits around Lightning Ridge. It has a dark base (black, gray, or dark blue) that intensifies the play-of-color. Black opals often show the most intense color range, including red, green, blue, and purple. Boulder Opal Primarily extracted in northeastern Queensland. It forms when opal fills thin veins present in iron-rich sandstones or other host rocks. This variety often retains part of the original rock, creating a contrasting base. Boulder opals can have dark hues and display vivid play-of-color similar to black opals. Crystal Opal Characterized by a translucent or transparent base. Sometimes in its raw state, it may show few colors, but once cut, it reveals prismatic flashes through a transparent or milky background. Crystal opals are found throughout Australia, with significant quantities coming from locations such as Coober Pedy. White Opal (Light Opal) This variety has a white or milky-white base. It can display colors as vibrant as those of black opals, but they generally appear less intense because the light background reduces visual contrast. White opals are particularly common in Coober Pedy and are more accessible than black or boulder opals. Matrix Opal A special variety where opal is found within porous rocks such as sandstone or ironstone. After impregnation treatments, the colors can become much more intense due to the contrast created by the dark matrix. Andamooka is famous for these matrix opals, called Andamooka Matrix, which after treatment can resemble the rare black opals from other areas. Value The prices of black opals from Lightning Ridge can reach astronomical figures, depending on the size, saturation, variety of colors, pattern arrangement, and purity of the stone. The rarest specimens, especially those with a predominance of red or with many bright hues, are considered among the most expensive gemstones in the world.\u003c\/p\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58028009521477,"sku":"AO018","price":87.26,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/41543_photoroom-004-20250402-175359.jpg?v=1779379119"},{"product_id":"precious-opal-dubnik-slovakia-sop061","title":"Precious Opal – Dubnik, Slovakia - SOP061","description":"\u003cul\u003e\u003cli\u003eDETAILED DESCRIPTION\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003eThe precious opal from Dubnik in Slovakia is considered one of the rarest and most beautiful minerals in the world. This exceptional stone was formed millions of years ago during post-volcanic activity, when the specific chemical and physical conditions necessary for its formation occurred in the volcano. Even the slightest change in these conditions could have prevented the formation of such a rare gemstone. Dubnik opal is distinguished by its color, where light passing through the stone's specific microstructure creates a breathtaking optical phenomenon, which the human eye perceives as moving rays of color. The body of the stone is usually white or translucent, which further enhances its play of color.\nThe history of opal mining in Dubnik dates back to the 16th century, when Emperor Rudolf II issued a permit for their discovery. Mining became so significant that interest in opals skyrocketed, and precious stones were sought after by European nobility and rulers. Among the famous figures who owned jewelry with Dubnik opals were Maria Theresa, Napoleon Bonaparte, King Louis XVIII, Empress Elisabeth of Bavaria (Sissi), and Queen Victoria. The historical significance of these gemstones is highlighted by the price opals achieved — their value often exceeded the price of 100 grams of pure gold per 1 carat of opal. The British Royal Family, for example, paid the equivalent of seven million euros for a single opal.\nThe peak of opal mining in Dubnik occurred between 1830 and 1896. Although opals were discovered in Australia in the mid-19th century, Dubnik opals maintained their prestige and remained the most sought-after opals in the world. Their uniqueness was further emphasized after the tragedy of 1950, when a valuable collection of over 366,000 opals was destroyed in a museum fire, further increasing their rarity.\nCurrently, deep mining no longer takes place in Dubnik, but individuals continue to discover rocks and search for opals by hand. These stones are still highly valued by collectors and jewelers for their rarity and unique beauty. Despite the high cost, Dubnik opal maintains its status as an exceptional investment, and its value continues to grow due to limited natural reserves and increasing demand.\nPrecious opals are distinguished from common synthetic imitations by their long history and origin from exclusive localities like Dubnik. While synthetic opals can lose color and quality, true Dubnik opals are known for their stable and lasting beauty.\u003c\/p\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58028009587013,"sku":"SOP061","price":226.23,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/29354_precious-opal---dubnik--slovakia.jpg?v=1779379120"},{"product_id":"australian-opal-025ct-cabochon-lightning-ridge-australia-ao027","title":"Australian Opal 0.25ct – Cabochon – Lightning Ridge, Australia - AO027","description":"\u003cul\u003e\n\u003cli\u003eLocation: Lightning Ridge, Australia\u003c\/li\u003e\n\u003cli\u003eWeight: 0.05g = 0.25ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 0.51 x 0.31 x 0.29 cm\u003c\/li\u003e\n\u003cli\u003eDETAILED DESCRIPTION\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAustralian opal is renowned worldwide as the most important source of high-quality opals. The quality of Australian opals is primarily due to their intense and pure play of color. Thanks to specific formation conditions, they often display vivid and contrasting hues. This variety is reflected in the numerous types of opal found in Australia — from black and boulder opals to crystal, white, and matrix opals. Australian opals are notably more durable and stable than many opals from other locations. Their naturally lower water content increases resistance to temperature fluctuations and humidity changes, reducing the risk of cracking or drying out and making them ideal for everyday use in jewelry. Formation Australian opals typically form in sedimentary rocks such as sandstones and clays, found in large geological basins (e.g., the Great Artesian Basin, a vast underground water system covering much of Australia's interior). Silica-rich water gradually seeps into tiny cracks and pores in the rock. As the water evaporates or drains away, thin layers of silica remain in the cavities and can transform into opal. Microscopic spheres of silicon dioxide (silica) play a fundamental role: they arrange themselves in a regular three-dimensional crystal-like structure. This arrangement creates the characteristic \"play of color,\" the iridescent effect visible when light hits the opal. The color and intensity of this effect depend on the size and arrangement of the spheres. Deposits Lightning Ridge is a legendary opal field located in the Australian state of New South Wales, approximately 770 kilometers northwest of Sydney. This area is particularly famous for so-called black opals, considered among the rarest and most valuable varieties in the world. History Mining activity in this area dates back to the late 19th century, but the real boom began in the early 20th century when explorers discovered opal-bearing layers with astonishing color effects. The name \"Lightning Ridge\" is linked to a legend that a shepherd and his flock died on a hill during a thunderstorm, struck by lightning. Reality or legend, this story has given the place a evocative and memorable name. Types of Australian Opals Black Opal The rarest and most valuable type of opal, famous especially for the deposits around Lightning Ridge. It has a dark base (black, gray, or dark blue) that intensifies the play of color. Black opals often show the most intense color range, including red, green, blue, and purple. Boulder Opal Primarily mined in northeastern Queensland. It forms when opal fills thin veins present in iron-rich sandstones or other host rocks. This variety often retains part of the original rock, creating a contrasting base. Boulder opals can have dark hues and display vibrant plays of color similar to black opals. Crystal Opal Characterized by a translucent or transparent base. Sometimes in its rough state, it may show few colors, but once cut, it reveals prismatic flashes through a clear or milky background. Crystal opals are found throughout Australia, with significant quantities coming from locations such as Coober Pedy. White Opal (Light Opal) This variety has a white or milky-white base. It can display colors as vibrant as black opals, but they generally appear less intense because the light background reduces visual contrast. White opals are particularly common in Coober Pedy and are more accessible than black or boulder opals. Matrix Opal A special variety where opal is found within porous rocks such as sandstone or ironstone. After impregnation treatments, the colors can become much more intense due to the contrast created by the dark matrix. Andamooka is famous for these matrix opals, called Andamooka Matrix, which after treatment can resemble the rare black opals from other areas. Value The prices of black opals from Lightning Ridge can reach astronomical figures, depending on the size, saturation, variety of colors, pattern arrangement, and purity of the stone. The rarest specimens, especially those with a predominance of red or with many bright hues, are considered among the most expensive gemstones in the world.\u003c\/p\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58028009652549,"sku":"AO027","price":61.41,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/41570_photoroom-000-20250402-204945.jpg?v=1779379122"},{"product_id":"20-pcs-precious-opal-cabochons-welo-ethiopia-opk131","title":"20 pcs precious opal cabochons - Welo, Ethiopia - OPK131","description":"\u003cul\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 11.4ct\u003c\/li\u003e\n\u003cli\u003eSize: approx. 6 mm\u003c\/li\u003e\n\u003cli\u003eNote: Box is included in the package\u003c\/li\u003e\n\u003cli\u003ePrice is for 20 pcs\u003c\/li\u003e\n\u003cli\u003eDETAILED DESCRIPTION\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eEthiopian Opal Cabochons Ethiopian opal cabochons are among the most popular cuts in jewelry, as the cabochon cut strongly enhances the opalescent effects of the stone while improving its mechanical stability. Thanks to this type of cut, the natural play of color typical of Ethiopian opals is beautifully highlighted. Characteristics of the cabochon cut The cabochon cut is characterized by a smooth, domed upper surface without facets, while the lower part of the stone is flat or slightly concave. This shape allows light to diffuse across the curved surface from many angles, effectively enhancing the iridescent play of colors and evenly distributing the opalescent effects throughout the stone. Stability and protection of the opal The rounded edges of the cabochon protect the opal from mechanical damage, which is particularly important given its relatively low hardness. In the case of hydrophane Ethiopian opals, this shape also offers a practical advantage: it reduces internal stresses and lowers the risk of cracks during water absorption. Color variability of Ethiopian opals Ethiopian opal cabochons display a wide range of colors, from light milky white to yellow and orange hues, with vibrant red and green flashes. Some specimens also exhibit rare blue or purple color play, which flows harmoniously across the domed surface thanks to the cabochon cut.\u003c\/p\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58028009750853,"sku":"OPK131","price":225.59,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/70639_20-pcs-precious-opal-cabochons---welo--ethiopia.jpg?v=1779379124"},{"product_id":"australian-opal-02ct-cabochon-lightning-ridge-australia-ao028","title":"Australian Opal 0.2ct - Cabochon - Lightning Ridge, Australia - AO028","description":"\u003cul\u003e\n\u003cli\u003eLocation: Lightning Ridge, Australia\u003c\/li\u003e\n\u003cli\u003eWeight: 0.04g = 0.2ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 0.5 x 0.33 x 0.2 cm\u003c\/li\u003e\n\u003cli\u003eDETAILED DESCRIPTION\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAustralian Opal is renowned worldwide as the most important source of high-quality opals. The quality of Australian opals is primarily due to their intense and pure play of color. Thanks to specific formation conditions, they often display vivid and contrasting hues. This variety is reflected in the numerous types of opal found in Australia — from black and boulder opals to crystal, white, and matrix opals. Australian opals are significantly more durable and stable than many opals from other locations. Their naturally lower water content increases resistance to temperature fluctuations and humidity changes, reducing the risk of cracking or drying out and making them ideal for everyday use in jewelry. Formation Australian opals typically form in sedimentary rocks such as sandstones and clays, found in large geological basins (e.g., the Great Artesian Basin, a vast underground water system covering much of Australia's interior). Silica-rich water gradually seeps into tiny cracks and pores in the rock. As the water evaporates or drains away, thin layers of silica remain in the cavities and can transform into opal. Microscopic spheres of silicon dioxide (silica) play a crucial role: they arrange themselves in a regular three-dimensional crystal-like structure. This arrangement creates the characteristic \"play of color,\" the iridescent effect visible when light strikes the opal. The color and intensity of this effect depend on the size and arrangement of the spheres. Deposits Lightning Ridge is a legendary opal field located in the Australian state of New South Wales, approximately 770 kilometers northwest of Sydney. This area is particularly famous for its so-called black opals, considered among the rarest and most valuable varieties in the world. History Mining activity in this area dates back to the late 19th century, but the real boom began in the early 20th century when explorers discovered opal-bearing layers with astonishing color effects. The name \"Lightning Ridge\" is linked to a legend that a shepherd and his flock died on a hill during a storm, struck by lightning. Reality or legend, this story gave the place a suggestive and memorable name. Types of Australian Opals Black Opal The rarest and most valuable type of opal, famous especially for the deposits around Lightning Ridge. It has a dark body tone (black, grey, or dark blue) which intensifies the play of color. Black opals often show the most intense color range, including red, green, blue, and purple. Boulder Opal Mined primarily in northeastern Queensland. It forms when opal fills thin veins found in iron-rich sandstone or other host rocks. This variety often retains part of the original rock, creating a contrasting base. Boulder opals can have dark tones and display vibrant play of color similar to black opals. Crystal Opal Characterized by a translucent or transparent body tone. Sometimes in its raw state, it may show few colors, but once cut, it reveals prismatic flashes through a clear or milky background. Crystal opals are found throughout Australia, with significant quantities coming from locations such as Coober Pedy. White Opal (Light Opal) This variety has a white or milky-white body tone. It can display colors as vibrant as those of black opals, but they generally appear less intense because the light background reduces visual contrast. White opals are particularly common in Coober Pedy and are more accessible than black or boulder opals. Matrix Opal A special variety where opal is found within porous rocks such as sandstone or ironstone. After impregnation treatments, the colors can become much more intense due to the contrast created by the dark matrix. Andamooka is famous for these matrix opals, called Andamooka Matrix, which after treatment can resemble the rare black opals from other areas. Value The prices of black opals from Lightning Ridge can reach astronomical figures, depending on the size, saturation, variety of colors, pattern arrangement, and purity of the stone. The rarest specimens, especially those with a predominance of red or with many bright hues, are considered among the most expensive gems in the world.\u003c\/p\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58028009816389,"sku":"AO028","price":42.01,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/41573_photoroom-006-20250402-210827.jpg?v=1779379125"},{"product_id":"australian-opal-138ct-cabochon-andamooka-australia-ao049","title":"Australian Opal 13.8ct – Cabochon – Andamooka, Australia - AO049","description":"\u003cul\u003e\n\u003cli\u003eLocation: Andamooka, Australia\u003c\/li\u003e\n\u003cli\u003eWeight: 2.7g = 13.8ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 2.7 x 1.6 x 0.5 cm\u003c\/li\u003e\n\u003cli\u003eDETAILED DESCRIPTION\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAustralian opal is renowned worldwide as the most important source of high-quality opals. The quality of Australian opals is primarily due to their intense and pure play of color. Thanks to specific formation conditions, they often display vibrant and highly contrasting hues. This diversity is reflected in the numerous varieties of opals offered by Australia: from black and boulder opals to crystal, white, and matrix opals. Australian opals are notably more durable and stable than many opals from other locations. Their lower natural water content increases resistance to temperature and humidity variations, reducing the risk of cracks or dehydration, and making them ideal for everyday use in jewelry. Formation Australian opals generally form in sedimentary rocks such as sandstones and clays found in enormous basins, for example, the Great Artesian Basin, a vast underground water system that extends over much of the Australian interior. Silica-rich water gradually penetrates small cracks or pores in the rock. When this water evaporates or drains away, thin layers of silica remain in the cavities and can slowly transform into opal. Microscopic spheres of silicon dioxide (silica) play a fundamental role: they arrange themselves in a regular three-dimensional structure similar to a crystal. This configuration creates the characteristic \"play of color,\" the iridescent effect visible in opal when light hits it. The color and intensity of this effect depend on the size and arrangement of these spheres. Deposits Andamooka is a small mining town in South Australia located approximately 600 kilometers north of Adelaide. It lies near the salt lake Lake Torrens, in a landscape characterized by an arid climate and difficult conditions. However, in the 1930s, rich opal veins were discovered here, making Andamooka one of Australia's oldest opal mining fields. History Although Andamooka is not as famous as Coober Pedy or Lightning Ridge, opal mining here has a long tradition. Many mines are still family-run and use manual labor or small machinery. In the past, Andamooka, like other Australian mining fields, attracted adventurers in search of precious opal veins and the chance to make their fortune in extreme conditions. Types of Australian opal Black Opal – the rarest and most valuable variety, especially famous for the Lightning Ridge deposit in New South Wales. It features a dark base (black, gray, or dark blue) that enhances the play of color. Black opals often show the most intense color spectrum, including red, green, blue, and purple. Boulder Opal – mainly extracted in Queensland. It forms when opal fills thin veins in iron-rich sandstones or other host rocks. This variety often retains part of the original rock, creating a contrasting base. Boulder opals can have darker tones and thus display a lively play of color similar to black opals. Crystal Opal – characterized by a transparent or translucent base. In its rough state, it may appear almost colorless, but the iridescence becomes evident through a crystalline or milky base. Crystal opals are found throughout Australia, with larger quantities coming from Coober Pedy. White Opal (Light Opal) – this variety has a white or milky-white base. It can show colors as brilliant as black opals, but the light background tends to attenuate the visual contrast, making the effect less intense. White opals are particularly common in Coober Pedy and generally more accessible than black or boulder opals. Matrix Opal – a particular variety where the opal is embedded in a porous rock, such as sandstone or ironstone. After impregnation treatments, the colors can become much more intense as the dark substrate accentuates the opal's play of color. Andamooka is especially famous for these matrix opals, called Andamooka Matrix, which after treatment can resemble the rare black opals from other locations. Value Andamooka opals are particularly valued for their relatively affordable prices and rich color patterns. However, high-quality specimens can reach high values, especially those showing an intense play of color or particularly spectacular patterns, such as the harlequin pattern.\u003c\/p\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58028009914693,"sku":"AO049","price":96.31,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/43448_australian-opal-13-8ct---cabochon---andamooka--australia.jpg?v=1779379127"},{"product_id":"20-pcs-precious-opal-cabochons-welo-ethiopia-opk132","title":"20 pcs precious opal cabochons - Welo, Ethiopia - OPK132","description":"\u003cul\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 6.4ct\u003c\/li\u003e\n\u003cli\u003eDimensions: approx. 5 mm\u003c\/li\u003e\n\u003cli\u003eNote: Box is included in the package\u003c\/li\u003e\n\u003cli\u003ePrice is for 20 pcs\u003c\/li\u003e\n\u003cli\u003eDETAILED DESCRIPTION\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eEthiopian Opal Cabochons Ethiopian opal cabochons are among the most popular cut forms in jewelry, as the cabochon cut strongly enhances the opalescent effects of the stone while improving its mechanical stability. Thanks to this type of cut, the natural play of colors typical of Ethiopian opals is beautifully showcased. Characteristics of the cabochon cut The cabochon cut is characterized by a smooth, domed upper surface free of facets, while the bottom of the stone is flat or slightly concave. This shape allows light to diffuse across the curved surface from many angles, effectively enhancing the iridescent play of colors and evenly distributing the opalescent effects throughout the stone. Stability and protection of the opal The rounded edges of the cabochon protect the opal from mechanical damage, which is particularly important given its relatively low hardness. In the case of hydrophane Ethiopian opals, this shape also offers a practical advantage: it reduces internal stresses and decreases the risk of cracks during water absorption. Color variability of Ethiopian opals Ethiopian opal cabochons display a wide range of colors, from light milky white shades to yellow and orange hues, with vivid red and green flashes. Some specimens also show rare blue or purple color play, which flows harmoniously across the domed surface thanks to the cabochon cut.\u003c\/p\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58028010045765,"sku":"OPK132","price":126.04,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/70642_20-pcs-precious-opal-cabochons---welo--ethiopia.jpg?v=1779379128"},{"product_id":"20-pcs-precious-opal-cabochons-welo-ethiopia-opk133","title":"20 pcs precious opal cabochons - Welo, Ethiopia - OPK133","description":"\u003cul\u003e\n\u003cli\u003eLocation: Welo, Ethiopia\u003c\/li\u003e\n\u003cli\u003eWeight: 15.7ct\u003c\/li\u003e\n\u003cli\u003eSize: approx. 7-9 mm\u003c\/li\u003e\n\u003cli\u003eNote: Box is included in the package\u003c\/li\u003e\n\u003cli\u003ePrice is for 20 pcs\u003c\/li\u003e\n\u003cli\u003eDETAILED DESCRIPTION\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eEthiopian Opal Cabochons Ethiopian opal cabochons are among the most popular cuts in jewelry, as the cabochon cut strongly enhances the opalescent effects of the stone while also improving its mechanical stability. Thanks to this type of cut, the natural play of colors typical of Ethiopian opals is beautifully showcased. Characteristics of the cabochon cut The cabochon cut is characterized by a smooth, domed upper surface without facets, while the bottom of the stone is flat or slightly concave. This shape allows light to diffuse across the curved surface from many angles, effectively enhancing the iridescent play of colors and uniformly distributing the opalescent effects throughout the stone. Stability and protection of the opal The rounded edges of the cabochon protect the opal from mechanical damage, which is particularly important given its relatively low hardness. In the case of hydrophane Ethiopian opals, this shape also offers a practical advantage: it reduces internal stress and decreases the risk of cracks during water absorption. Color variability of Ethiopian opals Ethiopian opal cabochons display a wide range of colors, from light milky white shades to yellow and orange hues, with vibrant red and green flashes. Some specimens also exhibit rare blue or purple plays of color, which flow harmoniously over the domed surface thanks to the cabochon cut.\u003c\/p\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58028010111301,"sku":"OPK133","price":309.61,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/70645_20-pcs-precious-opal-cabochons---welo--ethiopia.jpg?v=1779379129"},{"product_id":"australian-black-opal-185ct-cabochon-lightning-ridge-australia-ao026","title":"Australian black Opal 1.85ct – Cabochon – Lightning Ridge, Australia - AO026","description":"\u003cul\u003e\n\u003cli\u003eLocation: Lightning Ridge, Australia\u003c\/li\u003e\n\u003cli\u003eWeight: 0.37g = 1.85ct\u003c\/li\u003e\n\u003cli\u003eDimensions: 0.93 x 0.69 x 0.4 cm\u003c\/li\u003e\n\u003cli\u003eDETAILED DESCRIPTION\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAustralian Opal is renowned worldwide as the most significant source of high-quality opals. The quality of Australian opals is primarily due to their intense and pure play of color. Thanks to specific formation conditions, they often display vivid and contrasting hues. This variety is reflected in the numerous types of opal found in Australia — from black and boulder opals to crystal, white, and matrix opals. Australian opals are notably more durable and stable than many opals from other locations. Their naturally lower water content increases their resistance to temperature fluctuations and humidity changes, reducing the risk of cracking or drying out, making them ideal for everyday use in jewelry. Formation Australian opals typically form in sedimentary rocks like sandstone and clay, found in large geological basins (e.g., the Great Artesian Basin, a vast underground water system covering much of Australia's interior). Siliceous water gradually permeates small cracks and pores in the rock. When the water evaporates or drains away, thin layers of silica remain in the cavities and can transform into opal. Microscopic spheres of silicon dioxide (silica) play a fundamental role: they arrange themselves in a regular three-dimensional, crystal-like structure. This arrangement creates the characteristic \"play of color,\" the iridescent effect visible when light strikes the opal. The color and intensity of this effect depend on the size and arrangement of the spheres. Deposits Lightning Ridge is a legendary opal field located in the Australian state of New South Wales, approximately 770 kilometers northwest of Sydney. This area is particularly famous for its so-called black opals, considered among the rarest and most valuable varieties in the world. History Mining activity in this area dates back to the late 19th century, but the real boom began in the early 20th century when explorers discovered layers containing opals with astonishing color effects. The name \"Lightning Ridge\" is linked to a legend that a shepherd and his flock died on a hill during a storm, struck by lightning. Reality or legend, this story has given the place a suggestive and memorable name. Types of Australian Opals Black Opal The rarest and most valuable type of opal, famous primarily for the deposits around Lightning Ridge. It has a dark base (black, gray, or dark blue) that intensifies the play of color. Black opals often show the most intense color range, including red, green, blue, and violet. Boulder Opal Primarily mined in northeastern Queensland. It forms when opal fills thin veins present in iron-rich sandstones or other host rocks. This variety often retains part of the original rock, creating a contrasting base. Boulder opals can have dark tones and display vibrant play of color similar to black opals. Crystal Opal Characterized by a translucent or transparent base. Sometimes in its rough state, it may show little color, but once cut, it reveals prismatic flashes through a transparent or milky background. Crystal opals are found throughout Australia, with significant quantities coming from locations like Coober Pedy. White Opal (Light Opal) This variety has a white or milky-white base. It can show colors as vivid as those of black opals, but they generally appear less intense because the light background reduces visual contrast. White opals are particularly common in Coober Pedy and are more accessible than black or boulder opals. Matrix Opal A special variety where opal is found within porous rocks such as sandstone or ironstone. After impregnation treatments, the colors can become much more intense due to the contrast created by the dark matrix. Andamooka is famous for these matrix opals, called Andamooka Matrix, which after treatment can resemble the rare black opals from other areas. Value The prices of black opals from Lightning Ridge can reach astronomical figures, depending on the size, saturation, variety of colors, pattern arrangement, and purity of the stone. The rarest specimens, especially those with a predominance of red or with many bright hues, are considered among the most expensive gemstones in the world.\u003c\/p\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58028010144069,"sku":"AO026","price":827.35,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/41567_photoroom-011-20250402-202523.jpg?v=1779379129"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/collections\/21247-1_photoroom-042-20240914-190730.jpg?v=1779965558","url":"https:\/\/moldavite.it\/en\/collections\/opali.oembed?page=6","provider":"Moldavite.it","version":"1.0","type":"link"}