{"product_id":"fulgurite-04g-libyan-desert-egypt-fu059","title":"Fulgurite 0.4g – Libyan desert, Egypt - FU059","description":"\u003cul\u003e\n\u003cli\u003eLocation: Libyan desert, Egypt\u003c\/li\u003e\n\u003cli\u003eWeight: 0.4g\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.4 x 0.9 x 0.7 cm\u003c\/li\u003e\n\u003cli\u003eDETAILED DESCRIPTION\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eA fulgurite, also called fossil lightning or petrified lightning, is a glassy formation that forms when lightning strikes sand or other quartz-containing materials. When lightning strikes, the temperature reaches up to 30,000°C and melts the silica particles. The lightning heats the sand so rapidly that it melts and then quickly cools, forming tubes, cavities, or other glassy structures called fulgurites. These are systematically classified as so-called shock-metamorphosed rocks.\nFulgurites can vary in length and thickness depending on the intensity and duration of the lightning strike. The color usually ranges from transparent to pink or from brown to black, depending on the impurity content in the sand.\nThe inner walls of fulgurites are lined with a glassy layer formed by the melting of sand. Traces of partially melted sand grains are visible on the outer surface. Fulgurites are relatively fragile and break easily, which makes collecting larger pieces difficult and increases their price.\u003c\/p\u003e","brand":"PeltramMinerals","offers":[{"title":"Default Title","offer_id":58027967578437,"sku":"FU059","price":5.17,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0881\/1659\/2965\/files\/40244_photoroom-000-20250320-160820.jpg?v=1779378600","url":"https:\/\/moldavite.it\/en\/products\/fulgurite-04g-libyan-desert-egypt-fu059","provider":"Moldavite.it","version":"1.0","type":"link"}