{"product_id":"australian-boulder-opal-10x8mm-oval-cabochon-some-opalescence-cunnamulla","title":"Closeout Some Opalescence Australian 10mm x 8mm Oval Boulder Opal","description":"\u003cp\u003eBoulder Opal is found exclusively in Queensland, Australia, where veins and patches of precious opal form within rugged brown ironstone boulders. These gems developed over millions of years as rainwater dissolved silica from the earth's surface and deposited it into natural cavities within the ironstone. The result is a stone of \u003cstrong\u003eexceptional durability\u003c\/strong\u003e — the ironstone backing provides natural reinforcement that makes Boulder Opal more resistant to cracks and fractures compared to other opal varieties.\u003c\/p\u003e\u003cp\u003eThis 10mm x 8mm oval cabochon falls within the \u003cstrong\u003eSome Opalescence\u003c\/strong\u003e grade, meaning each stone contains at least a flash of opalescence across its surface. The opalescence covers approximately 1–5% of the gemstone's surface, with a primary hue range of purples and greens. Each stone's pattern is entirely unique, heightened by its individual opalescent display. The rough for these stones originated near the city of Cunnamulla, Queensland.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSold by the piece.\u003c\/strong\u003e Because each Boulder Opal is a one-of-a-kind natural gemstone, color distribution, pattern, and opalescent intensity will vary from stone to stone.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAustralian Boulder Opal sourced from Queensland\u003c\/li\u003e\n\u003cli\u003eRough originated near Cunnamulla, Queensland\u003c\/li\u003e\n\u003cli\u003eSome Opalescence grade — at least a flash of opalescence present throughout the stone\u003c\/li\u003e\n\u003cli\u003eOpalescence covers approximately 1–5% of the gemstone's surface\u003c\/li\u003e\n\u003cli\u003ePrimary opalescent hues: purple and green\u003c\/li\u003e\n\u003cli\u003eOpaque appearance\u003c\/li\u003e\n\u003cli\u003eIronstone backing provides natural structural reinforcement\u003c\/li\u003e\n\u003cli\u003eNo treatments applied (Treatment: None)\u003c\/li\u003e\n\u003cli\u003eEach stone features a unique, individual pattern\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eShape\u003c\/th\u003e\n\u003ctd\u003eOval Cabochon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003e10mm x 8mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOpal Type\u003c\/th\u003e\n\u003ctd\u003eBoulder Opal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOpalescence Grade\u003c\/th\u003e\n\u003ctd\u003eSome Opalescence (1–5% surface coverage)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePrimary Hues\u003c\/th\u003e\n\u003ctd\u003ePurple and Green\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransparency\u003c\/th\u003e\n\u003ctd\u003eOpaque\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTreatment\u003c\/th\u003e\n\u003ctd\u003eNone (N)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOrigin\u003c\/th\u003e\n\u003ctd\u003eQueensland, Australia (near Cunnamulla)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold As\u003c\/th\u003e\n\u003ctd\u003eIndividual piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eClean with warm, soapy water only.\u003c\/li\u003e\n\u003cli\u003eAvoid ultrasonic cleaners, steam cleaners, and any sudden or rapid temperature changes.\u003c\/li\u003e\n\u003cli\u003eNatural gemstone — color, pattern, and opalescent intensity will vary between individual pieces.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":46612260356310,"sku":"990.313","price":16.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/990.313NEW_thumb_612c54f0-beeb-45b9-acd7-59f843f8cd8f.jpg?v=1747953862","url":"https:\/\/www.ottofrei.com\/es\/products\/australian-boulder-opal-10x8mm-oval-cabochon-some-opalescence-cunnamulla","provider":"Otto Frei","version":"1.0","type":"link"}