{"product_id":"australian-boulder-opal-30x20mm-oval-higher-opalescence-cunnamulla","title":"Closeout Higher Opalescence Australian 30mm x 20mm 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 ironstone backing provides natural reinforcement, making Boulder Opal more resistant to cracks and fractures compared to other opal varieties.\u003c\/p\u003e\u003cp\u003eThis \u003cstrong\u003eHigher Opalescence\u003c\/strong\u003e grade has been hand-selected from the lot to contain the most opalescence available. The opalescence may appear in patterns or be distributed throughout the gemstone's surface, covering approximately 5–10% of the surface area with primary hues of purple and green.\u003c\/p\u003e\u003cp\u003eRough for these stones originated near the city of Cunnamulla, Queensland. Clean with warm, soapy water. \u003cem\u003eAvoid ultrasonic cleaners, steam cleaners, and any sudden or rapid heat changes.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHigher Opalescence grade — hand-selected for maximum opalescent coverage\u003c\/li\u003e\n\u003cli\u003eOpalescence covers approximately 5–10% of the gemstone surface\u003c\/li\u003e\n\u003cli\u003ePrimary opalescent hues of purple and green\u003c\/li\u003e\n\u003cli\u003eOpalescence may appear in patterns or be distributed throughout the stone\u003c\/li\u003e\n\u003cli\u003eNatural ironstone backing provides enhanced durability and fracture resistance\u003c\/li\u003e\n\u003cli\u003eOpaque appearance\u003c\/li\u003e\n\u003cli\u003eNo treatments (Treatment: None)\u003c\/li\u003e\n\u003cli\u003eRough originated near Cunnamulla, Queensland, Australia\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003e30mm x 20mm\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\u003eHigher Opalescence\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 By\u003c\/th\u003e\n\u003ctd\u003ePiece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSold by the piece.\u003c\/li\u003e\n\u003cli\u003eThis is a closeout item — availability is limited.\u003c\/li\u003e\n\u003cli\u003eDo not clean with ultrasonic or steam cleaners. Avoid sudden or rapid heat changes.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":46554650312918,"sku":"990.321","price":60.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/990.321NEW1_thumb_c90c5bae-d90d-4cec-96c1-760384d1fc9a.jpg?v=1747953959","url":"https:\/\/www.ottofrei.com\/products\/australian-boulder-opal-30x20mm-oval-higher-opalescence-cunnamulla","provider":"Otto Frei","version":"1.0","type":"link"}