{"title":"Crushed Opal for Glassblowing","description":"\u003cp dir=\"ltr\"\u003eCrushed opal made for boro. Our Glass Opal™ is a resin-free synthetic opal that is 33 COE compatible, so it works with standard borosilicate without the compatibility issues that come with material intended for soft glass. Every batch is cut and crushed in house, so you get consistent grain and clean material instead of mixed scrap.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eGlassblowers use crushed opal for encasing, inside-out work, frit blends, marbles, pendants, and accent work where you want play-of-color under clear. Because it is synthetic and resin-free, it holds its color and structure through the flame rather than burning out or clouding.\u003c\/p\u003e","products":[{"product_id":"white-rainbow-fire-crushed-glass-opal-33-coe","title":"White Rainbow Fire Crushed Glass Opal™  (33 COE Compatible)","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cp\u003eUnleash the power of a dazzling rainbow fire with our \u003cstrong\u003eWhite Rainbow Fire Crushed Glass Opal™\u003c\/strong\u003e. This premium \u003cstrong\u003elab-grown opal\u003c\/strong\u003e features a bright white base that flashes with vibrant multi-color rainbow fire. \u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 25%; text-align: left;\"\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eGlass Opal™ (Resin-Free, Gilson-Like Synthetic Opal, 99% Silica)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 25%; text-align: left;\"\u003eColor Play\u003c\/th\u003e\n\u003ctd\u003ePrimary: White | Fire: Multi-Colored Rainbow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 25%; text-align: left;\"\u003eGrain Sizes\u003c\/th\u003e\n\u003ctd\u003eCoarse (0.6mm to 1mm), Fine (0.3mm to 0.6mm), Ultra Fine (0.1mm to 0.3mm), Powder (less than 0.1mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 25%; text-align: left;\"\u003eHardness\u003c\/th\u003e\n\u003ctd\u003e6.5 on the Mohs scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 25%; text-align: left;\"\u003eHeat Resistance\u003c\/th\u003e\n\u003ctd\u003eUp to 900°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 25%; text-align: left;\"\u003eComposition\u003c\/th\u003e\n\u003ctd\u003e99% Silica (SiO2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 25%; text-align: left;\"\u003eSpecific Gravity\u003c\/th\u003e\n\u003ctd\u003e2.18 to 2.25 g\/cm3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 25%; text-align: left;\"\u003eRefractive Index\u003c\/th\u003e\n\u003ctd\u003e1.46 to 1.48\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 25%; text-align: left;\"\u003ePorosity\u003c\/th\u003e\n\u003ctd\u003eNon-porous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 25%; text-align: left;\"\u003eCoefficient of Expansion (COE)\u003c\/th\u003e\n\u003ctd\u003e30.5 to 33, compatible with borosilicate glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Choose Our Crushed Glass Opal™?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntense Fire and Color:\u003c\/strong\u003e Meticulously grown to display a brilliant spectrum of rainbow color flashes against a bright white base.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResin-Free Construction:\u003c\/strong\u003e Made of pure silica with no polymer content.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnmatched Stability:\u003c\/strong\u003e Guaranteed not to crack, craze, or yellow over time, offering superior durability over natural opal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Heat Tolerance:\u003c\/strong\u003e Withstands heat up to approximately 900°C, suitable for torch work and glass fusing thanks to its resin-free, pure silica makeup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-Porous and Dense:\u003c\/strong\u003e Holds fine detail and clean edges when used for inlay work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA Sustainable Choice:\u003c\/strong\u003e Free of synthetic resin fillers for jewelry making.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eCreative Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlasswork:\u003c\/strong\u003e Torch work, fusing, and flameworking with borosilicate glass.\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJewelry and Ring Inlay:\u003c\/strong\u003e A top choice for creating bold, eye catching jewelry with dazzling color play.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom Woodworking:\u003c\/strong\u003e Creates a dramatic shimmering effect when filling voids in woods like maple or cherry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResin Art and Casting:\u003c\/strong\u003e A striking choice for celestial themed or nature inspired resin pours and dice.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePen Turning:\u003c\/strong\u003e Craft premium pen blanks with brilliant rainbow flashes throughout.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003ePlease Note\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGlass Opal™ withstands heat up to approximately 900°C, well above polymer impregnated opals, making it suitable for glasswork and torch use.\u003c\/li\u003e\n\u003cli\u003eColor and pattern vary slightly batch to batch.\u003c\/li\u003e\n\u003cli\u003ePhotos are taken with liquid medium to reveal color. Opal appearance changes with lighting conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eTrademark Disclaimer:\u003c\/strong\u003e Glass Opal™ is an independent product and is not affiliated with, endorsed by, or associated with Gilson Opal® or any related brand. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"The Opal Dealer","offers":[{"title":"Course (0.6-1mm)","offer_id":44042350329899,"sku":"CRSH-GLSWHT-C","price":17.25,"currency_code":"USD","in_stock":true},{"title":"Fine (0.3-0.6mm)","offer_id":44042350362667,"sku":"CRSH-GLSWHT-F","price":17.25,"currency_code":"USD","in_stock":true},{"title":"Ultra Fine (0.1-0.3mm)","offer_id":44042350395435,"sku":"CRSH-GLSWHT-UF","price":17.25,"currency_code":"USD","in_stock":true},{"title":"Powder (\u003c0.1mm)","offer_id":44173647118379,"sku":"CRSH-GLSWHT-P","price":17.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0010\/3242\/1412\/files\/CourseCrushedGlassOpalWhiteRainbowFire33COECompatible.png?v=1783380066"},{"product_id":"crushed-glass-opal-black-rainbow-fire-33-coe-compatible","title":"Black Rainbow Fire Crushed Glass Opal™  (33 COE Compatible)","description":"","brand":"The Opal Dealer","offers":[{"title":"Course (0.6-1mm)","offer_id":44042829037611,"sku":"CRSH-GLSBLK-C","price":17.25,"currency_code":"USD","in_stock":true},{"title":"Fine (0.3-0.6mm)","offer_id":44042829070379,"sku":"CRSH-GLSBLK-F","price":17.25,"currency_code":"USD","in_stock":true},{"title":"Ultra Fine (0.1-0.3mm)","offer_id":44042829103147,"sku":"CRSH-GLSBLK-UF","price":17.25,"currency_code":"USD","in_stock":true},{"title":"Powder (\u003c0.1mm)","offer_id":44173648625707,"sku":"CRSH-GLSBLK-P","price":17.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0010\/3242\/1412\/files\/Screenshot2025-08-15at12-42-46Sora_6303cb7a-ff41-452e-a799-f0deb93efaf6.webp?v=1769121431"},{"product_id":"crushed-glass-opal-green-rainbow-fire-33-coe-compatible","title":"Green Rainbow Fire Crushed Glass Opal™  (33 COE Compatible)","description":"","brand":"The Opal Dealer","offers":[{"title":"Course (0.6-1mm)","offer_id":44042830348331,"sku":"CRSH-GLSGRN-C","price":17.25,"currency_code":"USD","in_stock":true},{"title":"Fine (0.3-0.6mm)","offer_id":44042830381099,"sku":"CRSH-GLSGRN-F","price":17.25,"currency_code":"USD","in_stock":true},{"title":"Ultra Fine (0.1-0.3mm)","offer_id":44042830413867,"sku":"CRSH-GLSGRN-UF","price":17.25,"currency_code":"USD","in_stock":true},{"title":"Powder (\u003c0.1mm)","offer_id":44173650198571,"sku":"CRSH-GLSGRN-P","price":17.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0010\/3242\/1412\/files\/Screenshot2025-08-15at12-42-46Sora_6303cb7a-ff41-452e-a799-f0deb93efaf6.webp?v=1769121431"},{"product_id":"crushed-glass-opal-blue-rainbow-fire-33-coe-compatible","title":"Blue Rainbow Fire Crushed Glass Opal™  (33 COE Compatible)","description":"","brand":"The Opal Dealer","offers":[{"title":"Course (0.6-1mm)","offer_id":44042832019499,"sku":"CRSH-GLSBLU-C","price":17.25,"currency_code":"USD","in_stock":true},{"title":"Fine (0.3-0.6mm)","offer_id":44042832052267,"sku":"CRSH-GLSBLU-F","price":17.25,"currency_code":"USD","in_stock":true},{"title":"Ultra Fine (0.1-0.3mm)","offer_id":44042832085035,"sku":"CRSH-GLSBLU-UF","price":17.25,"currency_code":"USD","in_stock":true},{"title":"Powder (\u003c0.1mm)","offer_id":44173652230187,"sku":"CRSH-GLSBLU-P","price":17.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0010\/3242\/1412\/files\/Screenshot2025-08-15at12-42-46Sora_6303cb7a-ff41-452e-a799-f0deb93efaf6.webp?v=1769121431"}],"url":"https:\/\/www.theopaldealer.com\/collections\/crushed-opal-for-glassblowing.oembed","provider":"The Opal Dealer","version":"1.0","type":"link"}