{"title":"Glass Opal | 33 COE Synthetic Opal","description":"","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"},{"product_id":"white-rainbow-glass-opal™-rough","title":"White Rainbow Glass Opal™ Rough","description":"\u003cp\u003e⚠️ Photos are taken with a liquid medium to reveal color; the piece you receive will be a rough cut and may not appear polished or glossy.\u003c\/p\u003e\n\u003cp\u003eWhite Rainbow Fire Glass Opal™ Rough – Lab Created Synthetic Opal, Resin-Free\u003c\/p\u003e\n\u003cp\u003eExperience the deep, luxurious beauty of our White Rainbow Multi-Color Glass Opal™ Rough. Inspired by the world's finest crystal opals, this premium lab created rough features a bright white base with vibrant multi-color rainbow fire. A resin-free, Gilson-like opal, Glass Opal™ is a top choice for lapidary and jewelry making, delivering dramatic, high contrast color play ideal for cutting, carving, inlay, and glasswork projects.\u003c\/p\u003e\n\u003cp\u003e─────────────────────────\u003c\/p\u003e\n\u003cp\u003eProduct Specifications\u003c\/p\u003e\n\u003cp\u003e✦ Material: Glass Opal™ (Resin-Free, Gilson-Like Synthetic Opal)\u003cbr\u003e✦ Thickness: 8-18mm\u003cbr\u003e✦ Primary Color: White\u003cbr\u003e✦ Play-of-Color: Multi-Colored Rainbow Fire\u003cbr\u003e✦ Opal Pattern: Columnar and striated banding\u003cbr\u003e✦ Form: Rough slab\u003cbr\u003e✦ Dimensions: See listing photos for approximate measurements\u003cbr\u003e✦ Hardness: 6.5 on the Mohs scale\u003cbr\u003e✦ Heat Resistance: Up to 900°C\u003cbr\u003e✦ Composition: 99% Silica (SiO2)\u003cbr\u003e✦ Specific Gravity: 2.18 to 2.25 g\/cm3\u003cbr\u003e✦ Refractive Index: 1.46 to 1.48\u003cbr\u003e✦ Porosity: Non-porous\u003cbr\u003e✦ Coefficient of Expansion (COE): 30.5 to 33, compatible with borosilicate glass\u003c\/p\u003e\n\u003cp\u003e─────────────────────────\u003c\/p\u003e\n\u003cp\u003eWhy Choose Glass Opal™?\u003c\/p\u003e\n\u003cp\u003e✦ Resin-free construction, made of pure silica with no polymer content\u003cbr\u003e✦ High contrast fire and color, vibrant rainbow flashes against a white body tone\u003cbr\u003e✦ Unmatched stability, will not crack, craze, or yellow over time\u003cbr\u003e✦ Non-porous and dense, holding a sharp polish and clean edges when cut\u003cbr\u003e✦ High heat tolerance, suitable for torch work and glass fusing thanks to its resin-free, pure silica makeup\u003cbr\u003e✦ Consistent quality, a year long layering process creates vibrant, reliable patterns\u003cbr\u003e✦ A sustainable choice for jewelry making, free of synthetic resin fillers\u003c\/p\u003e\n\u003cp\u003e─────────────────────────\u003c\/p\u003e\n\u003cp\u003eCreative Applications\u003c\/p\u003e\n\u003cp\u003e✦ Lapidary cutting: cabochons, freeforms, custom cuts\u003cbr\u003e✦ Glasswork: torch work, fusing, and flameworking with borosilicate glass\u003cbr\u003e✦ Inlay work: wood, resin, or metal designs\u003cbr\u003e✦ Wire wrapping: bold, eye catching jewelry pieces\u003cbr\u003e✦ Crafts \u0026amp; design: decorative accents in knives, pens, instruments, art projects\u003c\/p\u003e\n\u003cp\u003e─────────────────────────\u003c\/p\u003e\n\u003cp\u003ePlease Note\u003c\/p\u003e\n\u003cp\u003e✦ Glass Opal™ withstands heat up to approx. 900°C, well above resin-based opals, making it suitable for glasswork and torch use\u003cbr\u003e✦ Color and pattern vary slightly piece to piece\u003cbr\u003e✦ As with natural rough material, some pieces may contain small internal cracks or fissures. These are a normal characteristic of rough stone and are typically accounted for during cutting. Buyers cutting for a specific size should inspect photos closely, as cracks may limit total cutting yield\u003cbr\u003e✦ Photos are taken with liquid medium to reveal color; you will receive rough cut material (not polished)\u003cbr\u003e✦ Opal appearance changes with lighting conditions\u003c\/p\u003e\n\u003cp\u003e─────────────────────────\u003c\/p\u003e\n\u003cp\u003eTrademark Disclaimer\u003c\/p\u003e\n\u003cp\u003eGlass Opal™ is an independent product and is not affiliated with, endorsed by, or associated with Gilson Opal® or any related brand. \"Gilson-like\" is used solely as a descriptive term to indicate a similar style of lab created opal, not as a claim of origin or brand affiliation.\u003c\/p\u003e","brand":"The Opal Dealer","offers":[{"title":"A - 30.82 Grams","offer_id":44354873229355,"sku":"ROUGH-GO-WHT-A","price":246.56,"currency_code":"USD","in_stock":true},{"title":"B - 34.33 Grams","offer_id":44354873262123,"sku":"ROUGH-GO-WHT-B","price":274.64,"currency_code":"USD","in_stock":true},{"title":"C - 35.14 Grams","offer_id":44354873294891,"sku":"ROUGH-GO-WHT-C","price":281.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0010\/3242\/1412\/files\/GlassOpalRough33COECompatibleSyntheticOpalGilson.png?v=1783957124"},{"product_id":"black-rainbow-glass-opal™-rough","title":"Black Rainbow Glass Opal™ Rough","description":"\u003cp\u003e⚠️ Photos are taken with a liquid medium to reveal color; the piece you receive will be a rough cut and may not appear polished or glossy.\u003c\/p\u003e\n\u003cp\u003eBlack Fire Glass Opal™ Rough – Lab Created Synthetic Opal, Resin-Free\u003c\/p\u003e\n\u003cp\u003eExperience the deep, luxurious beauty of our Black Rainbow Multi-Color Glass Opal™ Rough. Inspired by the world's rarest black opals, this premium lab created rough features a rich black base with vibrant multi-color rainbow fire. A resin-free, Gilson-like opal, Glass Opal™ is a top choice for lapidary and jewelry making, delivering dramatic, high contrast color play ideal for cutting, carving, inlay, and glasswork projects.\u003c\/p\u003e\n\u003cp\u003e─────────────────────────\u003c\/p\u003e\n\u003cp\u003eProduct Specifications\u003c\/p\u003e\n\u003cp\u003e✦ Material: Glass Opal™ (Resin-Free, Gilson-Like Synthetic Opal)\u003cbr\u003e✦ Thickness: 8-18mm\u003cbr\u003e✦ Primary Color: Black\u003cbr\u003e✦ Play-of-Color: Multi-Colored Rainbow Fire\u003cbr\u003e✦ Opal Pattern: Columnar and striated banding\u003cbr\u003e✦ Form: Rough slab\u003cbr\u003e✦ Dimensions: See listing photos for approximate measurements\u003cbr\u003e✦ Hardness: 6.5 on the Mohs scale\u003cbr\u003e✦ Heat Resistance: Up to 900°C\u003cbr\u003e✦ Composition: 99% Silica (SiO2)\u003cbr\u003e✦ Specific Gravity: 2.18 to 2.25 g\/cm3\u003cbr\u003e✦ Refractive Index: 1.46 to 1.48\u003cbr\u003e✦ Porosity: Non-porous\u003cbr\u003e✦ Coefficient of Expansion (COE): 30.5 to 33, compatible with borosilicate glass\u003c\/p\u003e\n\u003cp\u003e─────────────────────────\u003c\/p\u003e\n\u003cp\u003eWhy Choose Glass Opal™?\u003c\/p\u003e\n\u003cp\u003e✦ Resin-free construction, made of pure silica with no polymer content\u003cbr\u003e✦ High contrast fire and color, vibrant rainbow flashes against a white body tone\u003cbr\u003e✦ Unmatched stability, will not crack, craze, or yellow over time\u003cbr\u003e✦ Non-porous and dense, holding a sharp polish and clean edges when cut\u003cbr\u003e✦ High heat tolerance, suitable for torch work and glass fusing thanks to its resin-free, pure silica makeup\u003cbr\u003e✦ Consistent quality, a year long layering process creates vibrant, reliable patterns\u003cbr\u003e✦ A sustainable choice for jewelry making, free of synthetic resin fillers\u003c\/p\u003e\n\u003cp\u003e─────────────────────────\u003c\/p\u003e\n\u003cp\u003eCreative Applications\u003c\/p\u003e\n\u003cp\u003e✦ Lapidary cutting: cabochons, freeforms, custom cuts\u003cbr\u003e✦ Glasswork: torch work, fusing, and flameworking with borosilicate glass\u003cbr\u003e✦ Inlay work: wood, resin, or metal designs\u003cbr\u003e✦ Wire wrapping: bold, eye catching jewelry pieces\u003cbr\u003e✦ Crafts \u0026amp; design: decorative accents in knives, pens, instruments, art projects\u003c\/p\u003e\n\u003cp\u003e─────────────────────────\u003c\/p\u003e\n\u003cp\u003ePlease Note\u003c\/p\u003e\n\u003cp\u003e✦ Glass Opal™ withstands heat up to approx. 900°C, well above resin-based opals, making it suitable for glasswork and torch use\u003cbr\u003e✦ Color and pattern vary slightly piece to piece\u003cbr\u003e✦ As with natural rough material, some pieces may contain small internal cracks or fissures. These are a normal characteristic of rough stone and are typically accounted for during cutting. Buyers cutting for a specific size should inspect photos closely, as cracks may limit total cutting yield\u003cbr\u003e✦ Photos are taken with liquid medium to reveal color; you will receive rough cut material (not polished)\u003cbr\u003e✦ Opal appearance changes with lighting conditions\u003c\/p\u003e\n\u003cp\u003e─────────────────────────\u003c\/p\u003e\n\u003cp\u003eTrademark Disclaimer\u003c\/p\u003e\n\u003cp\u003eGlass Opal™ is an independent product and is not affiliated with, endorsed by, or associated with Gilson Opal® or any related brand. \"Gilson-like\" is used solely as a descriptive term to indicate a similar style of lab created opal, not as a claim of origin or brand affiliation.\u003c\/p\u003e","brand":"The Opal Dealer","offers":[{"title":"A - 197.85 Grams","offer_id":44354986344491,"sku":"ROUGH-GO-BLK-A","price":1582.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0010\/3242\/1412\/files\/BlackRainbowGlassOpalRough33COECompatibleSyntheticOpalGilson.png?v=1783957403"},{"product_id":"green-rainbow-glass-opal™-rough","title":"Green Rainbow Glass Opal™ Rough","description":"\u003cp\u003e⚠️ Photos are taken with a liquid medium to reveal color; the piece you receive will be a rough cut and may not appear polished or glossy.\u003c\/p\u003e\n\u003cp\u003eGreen Fire Glass Opal™ Rough – Lab Created Synthetic Opal, Resin-Free\u003c\/p\u003e\n\u003cp\u003eExperience the deep, luxurious beauty of our Green Rainbow Multi-Color Glass Opal™ Rough. Inspired by the world's rarest green opals, this premium lab created rough features a rich green base with vibrant multi-color rainbow fire. A resin-free, Gilson-like opal, Glass Opal™ is a top choice for lapidary and jewelry making, delivering dramatic, high contrast color play ideal for cutting, carving, inlay, and glasswork projects.\u003c\/p\u003e\n\u003cp\u003e─────────────────────────\u003c\/p\u003e\n\u003cp\u003eProduct Specifications\u003c\/p\u003e\n\u003cp\u003e✦ Material: Glass Opal™ (Resin-Free, Gilson-Like Synthetic Opal)\u003cbr\u003e✦ Thickness: 8-18mm\u003cbr\u003e✦ Primary Color: Black\u003cbr\u003e✦ Play-of-Color: Multi-Colored Rainbow Fire\u003cbr\u003e✦ Opal Pattern: Columnar and striated banding\u003cbr\u003e✦ Form: Rough slab\u003cbr\u003e✦ Dimensions: See listing photos for approximate measurements\u003cbr\u003e✦ Hardness: 6.5 on the Mohs scale\u003cbr\u003e✦ Heat Resistance: Up to 900°C\u003cbr\u003e✦ Composition: 99% Silica (SiO2)\u003cbr\u003e✦ Specific Gravity: 2.18 to 2.25 g\/cm3\u003cbr\u003e✦ Refractive Index: 1.46 to 1.48\u003cbr\u003e✦ Porosity: Non-porous\u003cbr\u003e✦ Coefficient of Expansion (COE): 30.5 to 33, compatible with borosilicate glass\u003c\/p\u003e\n\u003cp\u003e─────────────────────────\u003c\/p\u003e\n\u003cp\u003eWhy Choose Glass Opal™?\u003c\/p\u003e\n\u003cp\u003e✦ Resin-free construction, made of pure silica with no polymer content\u003cbr\u003e✦ High contrast fire and color, vibrant rainbow flashes against a white body tone\u003cbr\u003e✦ Unmatched stability, will not crack, craze, or yellow over time\u003cbr\u003e✦ Non-porous and dense, holding a sharp polish and clean edges when cut\u003cbr\u003e✦ High heat tolerance, suitable for torch work and glass fusing thanks to its resin-free, pure silica makeup\u003cbr\u003e✦ Consistent quality, a year long layering process creates vibrant, reliable patterns\u003cbr\u003e✦ A sustainable choice for jewelry making, free of synthetic resin fillers\u003c\/p\u003e\n\u003cp\u003e─────────────────────────\u003c\/p\u003e\n\u003cp\u003eCreative Applications\u003c\/p\u003e\n\u003cp\u003e✦ Lapidary cutting: cabochons, freeforms, custom cuts\u003cbr\u003e✦ Glasswork: torch work, fusing, and flameworking with borosilicate glass\u003cbr\u003e✦ Inlay work: wood, resin, or metal designs\u003cbr\u003e✦ Wire wrapping: bold, eye catching jewelry pieces\u003cbr\u003e✦ Crafts \u0026amp; design: decorative accents in knives, pens, instruments, art projects\u003c\/p\u003e\n\u003cp\u003e─────────────────────────\u003c\/p\u003e\n\u003cp\u003ePlease Note\u003c\/p\u003e\n\u003cp\u003e✦ Glass Opal™ withstands heat up to approx. 900°C, well above resin-based opals, making it suitable for glasswork and torch use\u003cbr\u003e✦ Color and pattern vary slightly piece to piece\u003cbr\u003e✦ As with natural rough material, some pieces may contain small internal cracks or fissures. These are a normal characteristic of rough stone and are typically accounted for during cutting. Buyers cutting for a specific size should inspect photos closely, as cracks may limit total cutting yield\u003cbr\u003e✦ Photos are taken with liquid medium to reveal color; you will receive rough cut material (not polished)\u003cbr\u003e✦ Opal appearance changes with lighting conditions\u003c\/p\u003e\n\u003cp\u003e─────────────────────────\u003c\/p\u003e\n\u003cp\u003eTrademark Disclaimer\u003c\/p\u003e\n\u003cp\u003eGlass Opal™ is an independent product and is not affiliated with, endorsed by, or associated with Gilson Opal® or any related brand. \"Gilson-like\" is used solely as a descriptive term to indicate a similar style of lab created opal, not as a claim of origin or brand affiliation.\u003c\/p\u003e","brand":"The Opal Dealer","offers":[{"title":"A - 58 Grams","offer_id":44354988081195,"sku":"ROUGH-GO-GRN-A","price":406.0,"currency_code":"USD","in_stock":true},{"title":"B - 35.14 Grams","offer_id":44354990014507,"sku":"ROUGH-GO-GRN-B","price":281.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0010\/3242\/1412\/files\/GreenRainbowGlassOpalRough33COECompatibleSyntheticOpalGilson.png?v=1783957818"},{"product_id":"blue-rainbow-glass-opal™-rough","title":"Blue Rainbow Glass Opal™ Rough","description":"\u003cp\u003e⚠️ Photos are taken with a liquid medium to reveal color; the piece you receive will be a rough cut and may not appear polished or glossy.\u003c\/p\u003e\n\u003cp\u003eBlue Rainbow Fire Glass Opal™ Rough – Lab Created Synthetic Opal, Resin-Free\u003c\/p\u003e\n\u003cp\u003eExperience the bright, ethereal beauty of our Blue Rainbow Multi-Color Glass Opal™ Rough. Inspired by rare crystal and light-toned Australian opals, this premium lab created rough features a soft blue base with vibrant multi-color rainbow fire. A resin-free, Gilson-like opal, Glass Opal™ is a top choice for lapidary and jewelry making, delivering brilliant, luminous color play ideal for cutting, carving, inlay, and glasswork projects.\u003c\/p\u003e\n\u003cp\u003e─────────────────────────\u003c\/p\u003e\n\u003cp\u003eProduct Specifications\u003c\/p\u003e\n\u003cp\u003e✦ Material: Glass Opal™ (Resin-Free, Gilson-Like Synthetic Opal)\u003cbr\u003e✦ Thickness: 8-18mm\u003cbr\u003e✦ Primary Color: Black\u003cbr\u003e✦ Play-of-Color: Multi-Colored Rainbow Fire\u003cbr\u003e✦ Opal Pattern: Columnar and striated banding\u003cbr\u003e✦ Form: Rough slab\u003cbr\u003e✦ Dimensions: See listing photos for approximate measurements\u003cbr\u003e✦ Hardness: 6.5 on the Mohs scale\u003cbr\u003e✦ Heat Resistance: Up to 900°C\u003cbr\u003e✦ Composition: 99% Silica (SiO2)\u003cbr\u003e✦ Specific Gravity: 2.18 to 2.25 g\/cm3\u003cbr\u003e✦ Refractive Index: 1.46 to 1.48\u003cbr\u003e✦ Porosity: Non-porous\u003cbr\u003e✦ Coefficient of Expansion (COE): 30.5 to 33, compatible with borosilicate glass\u003c\/p\u003e\n\u003cp\u003e─────────────────────────\u003c\/p\u003e\n\u003cp\u003eWhy Choose Glass Opal™?\u003c\/p\u003e\n\u003cp\u003e✦ Resin-free construction, made of pure silica with no polymer content\u003cbr\u003e✦ High contrast fire and color, vibrant rainbow flashes against a white body tone\u003cbr\u003e✦ Unmatched stability, will not crack, craze, or yellow over time\u003cbr\u003e✦ Non-porous and dense, holding a sharp polish and clean edges when cut\u003cbr\u003e✦ High heat tolerance, suitable for torch work and glass fusing thanks to its resin-free, pure silica makeup\u003cbr\u003e✦ Consistent quality, a year long layering process creates vibrant, reliable patterns\u003cbr\u003e✦ A sustainable choice for jewelry making, free of synthetic resin fillers\u003c\/p\u003e\n\u003cp\u003e─────────────────────────\u003c\/p\u003e\n\u003cp\u003eCreative Applications\u003c\/p\u003e\n\u003cp\u003e✦ Lapidary cutting: cabochons, freeforms, custom cuts\u003cbr\u003e✦ Glasswork: torch work, fusing, and flameworking with borosilicate glass\u003cbr\u003e✦ Inlay work: wood, resin, or metal designs\u003cbr\u003e✦ Wire wrapping: bold, eye catching jewelry pieces\u003cbr\u003e✦ Crafts \u0026amp; design: decorative accents in knives, pens, instruments, art projects\u003c\/p\u003e\n\u003cp\u003e─────────────────────────\u003c\/p\u003e\n\u003cp\u003ePlease Note\u003c\/p\u003e\n\u003cp\u003e✦ Glass Opal™ withstands heat up to approx. 900°C, well above resin-based opals, making it suitable for glasswork and torch use\u003cbr\u003e✦ Color and pattern vary slightly piece to piece\u003cbr\u003e✦ As with natural rough material, some pieces may contain small internal cracks or fissures. These are a normal characteristic of rough stone and are typically accounted for during cutting. Buyers cutting for a specific size should inspect photos closely, as cracks may limit total cutting yield\u003cbr\u003e✦ Photos are taken with liquid medium to reveal color; you will receive rough cut material (not polished)\u003cbr\u003e✦ Opal appearance changes with lighting conditions\u003c\/p\u003e\n\u003cp\u003e─────────────────────────\u003c\/p\u003e\n\u003cp\u003eTrademark Disclaimer\u003c\/p\u003e\n\u003cp\u003eGlass Opal™ is an independent product and is not affiliated with, endorsed by, or associated with Gilson Opal® or any related brand. \"Gilson-like\" is used solely as a descriptive term to indicate a similar style of lab created opal, not as a claim of origin or brand affiliation.\u003c\/p\u003e","brand":"The Opal Dealer","offers":[{"title":"A - 247.52 Grams","offer_id":44354990735403,"sku":"ROUGH-GO-BLU-A","price":1980.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0010\/3242\/1412\/files\/BlueRainbowGlassOpalRough33COECompatibleSyntheticOpalGilson.png?v=1783958059"}],"url":"https:\/\/www.theopaldealer.com\/collections\/glass-opal.oembed","provider":"The Opal Dealer","version":"1.0","type":"link"}