{"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\/products\/blue-rainbow-glass-opal%e2%84%a2-rough","provider":"The Opal Dealer","version":"1.0","type":"link"}