{"product_id":"amber-heart-sumatra-indonesia-js005","title":"Cuore d'ambra – Sumatra, Indonesia - JS005","description":"\u003cul\u003e\n\u003cli\u003eLocalità: Sumatra, Indonesia\u003c\/li\u003e\n\u003cli\u003ePeso: 4,8-7,6g\u003c\/li\u003e\n\u003cli\u003eDimensioni: 3,2-3,4cm\u003c\/li\u003e\n\u003cli\u003eUV attivo\u003c\/li\u003e\n\u003cli\u003eDESCRIZIONE DETTAGLIATA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIndonesian Ambra is notable for its unique range of colors, geological age, and the rarity of its inclusions. It is among the more recently discovered sources of Ambra and has gained popularity in the last few decades, particularly for its rare blue and green varieties.\nOrigin\nIndonesian Ambra primarily comes da the islands of Sumatra, Borneo (Kalimantan), and Sulawesi. The most famous deposits are located in the Aceh province on Sumatra. Geologically, this Ambra dates back to the Miocene epoch, approximately 20 to 23 million years ago.\nColors and optical properties\nIndonesian Ambra appears in a wide spectrum of colors. The most prized is blue Ambra, which fluoresces with a blue glow under UV light or in direct sunlight. This effect is caused by the presence of aromatic hydrocarbons. However, the blue color does not always manifest under all conditions—it is best observed under UV light or in direct sunlight. Green Ambra is rarer and gets its color da trace elements and natural oxidation. Red and brown varieties are more common and resemble Baltic Ambra in appearance. Oroen Ambra is translucent and features honey-yellow shades.\nComposition and physical properties\nIndonesian Ambra has a hardness of about 2 to 2.5 on the Mohs scale, making it relatively soft and easily scratched. Its density ranges between 1.05 and 1.10 g\/cm³, which is why it often floats in salt water. Chemically, it contains less succinic acid than Baltic Ambra, setting it apart.\nInclusions\nUnlike Dominican or Burmese Ambra, Indonesian Ambra very rarely contains insect inclusions. It most often contains plant remnants such as fragments of leaves, needles, or resin bubbles. Air bubbles can produce interesting optical effects. Occasionally, microorganisms appear. The geological conditions and age of this Ambra likely did not allow for the preservation of larger amounts of animal inclusions.\nExtraction\nIndonesian Ambra is mined by hand in tropical jungles, often within coal-bearing sediments. After extraction, it is cut, Lucidato, and sold either in its Grezzo form or as a crafted gemstone.\nIndonesian Ambra is popular in Asia, Europe, and the United States. Its price depends on color, clarity, and the presence of inclusions. Blue Ambra is the rarest and most expensive. Green Ambra is also rare but more affordable. Red and Oroen Ambra are among the more common and less costly types. It is used mainly for making necklaces, bracelets, anelli, and decorative items, and is often combined with Argento or Altro precious metals.\nAuthenticity\nThere are several ways to verify the authenticity of Indonesian Ambra. In the salt test, Ambra floats in salt water with a density higher than 1.1 g\/cm³. Under UV light, blue Ambra fluoresces blue and green Ambra often yellow. When heated, real Ambra emits a typical resinous odor. It feels warm and non-sticky to the touch, unlike plastic imitations, which tend to be cold and excessively lightweight.\nThere are many counterfeits on the market. Plastic imitations or pressed Ambra—made by compressing small fragments—are commonly sold. This type has lower value than natural Ambra. Another common substitute is cOpalee, a younger natural resin that is only 1 to 5 million years old.\nAmbra heart – Sumatra, Indonesia\u003c\/p\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58028170707269,"sku":"JS005","price":25.2,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/55124_amber-heart---sumatra--indonesia.jpg?v=1779381391","url":"https:\/\/moldavite.it\/products\/amber-heart-sumatra-indonesia-js005","provider":"Moldavite.it","version":"1.0","type":"link"}