{"product_id":"gadolinium-gallium-garnet-ggg","title":"Gadolinium Gallium Garnet (GGG) — Lab-Grown Clarity with Diamond-Like Sparkle","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e💎 Gadolinium Gallium Garnet Rough — Diamond-Like Fire, Collector's Rarity\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eStep into the world of optical enchantment with Gadolinium Gallium Garnet (Gd₃Ga₅O₁₂) — a lab-grown synthetic garnet developed for high-tech optics, magnetic-bubble memory, and precision laser and substrate applications. With a dispersion essentially identical to diamond and bright, glassy brilliance, GGG was used as one of the finest diamond simulants of its era before rarer applications drew it back into the optics lab. Today it remains a prized find among collectors and lapidaries drawn to exotic man-made materials with a genuine scientific pedigree.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e✨ Key Features:\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Transparent and colorless to a faint champagne or pale tint\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFire\/Dispersion\u003c\/strong\u003e: ~0.045 — on par with diamond (0.044), delivering crisp, brilliant spectral flashes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefractive Index\u003c\/strong\u003e: ~1.97 — high, producing bright, glassy brilliance and strong internal reflections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness\u003c\/strong\u003e: ~6.5–7 on the Mohs scale — durable, though best treated with care in rings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDensity\u003c\/strong\u003e: ~7.05 g\/cm³ — the heaviest of the common diamond simulants, with a substantial heft in hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMelting Point\u003c\/strong\u003e: ~1725 °C (3137 °F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrowth Method\u003c\/strong\u003e: Lab-grown using the Czochralski pulling method\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrystal System\u003c\/strong\u003e: Cubic — no cleavage, excellent for faceting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003eWhether you're a gem artist chasing diamond-like brilliance and fire or a collector drawn to rare lab materials with a real story, Gadolinium Gallium Garnet offers a crisp, radiant sparkle and a scientific pedigree few materials can match. Each piece is sold by weight and rewards a careful cutter with clean, brilliant results.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e📸 \u003cstrong\u003eAdditional Notes\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003e\u003cem\u003eIf you would like to see additional pictures of the piece(s) you're interested in, please feel free to contact me. I'll be happy to provide more images for your review.\u003c\/em\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003eThe color of the stone in the photo may vary slightly, as not all computer monitors are calibrated the same.\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tom's Box of Rocks","offers":[{"title":"GGG0001 - 1.5 grams","offer_id":45997313556549,"sku":"GGG0001","price":41.0,"currency_code":"USD","in_stock":true},{"title":"GGG0002 - 3.8 grams","offer_id":45997313589317,"sku":"GGG0002","price":80.0,"currency_code":"USD","in_stock":true},{"title":"GGG0003 - 4.1 grams","offer_id":45997313622085,"sku":"GGG0003","price":85.0,"currency_code":"USD","in_stock":true},{"title":"GGG0004 - 4.1 grams","offer_id":45997313654853,"sku":"GGG0004","price":85.0,"currency_code":"USD","in_stock":true},{"title":"GGG0005 - 7.0 grams","offer_id":45997313687621,"sku":"GGG0005","price":136.0,"currency_code":"USD","in_stock":true},{"title":"GGG0006 - 5.5 grams","offer_id":45997313720389,"sku":"GGG0006","price":110.0,"currency_code":"USD","in_stock":true},{"title":"GGG0007 - 6.6 grams","offer_id":45997313753157,"sku":"GGG0007","price":129.0,"currency_code":"USD","in_stock":true},{"title":"GGG0008 - 7.3 grams","offer_id":45997313785925,"sku":"GGG0008","price":141.0,"currency_code":"USD","in_stock":true},{"title":"GGG0009 - 6.5 grams","offer_id":45997313818693,"sku":"GGG0009","price":128.0,"currency_code":"USD","in_stock":true},{"title":"GGG0010 - 8.0 grams","offer_id":45997313851461,"sku":"GGG0010","price":154.0,"currency_code":"USD","in_stock":true},{"title":"GGG0011 - 8.5 grams","offer_id":45997313884229,"sku":"GGG0011","price":162.0,"currency_code":"USD","in_stock":true},{"title":"GGG0012 - 7.6 grams","offer_id":45997313916997,"sku":"GGG0012","price":146.0,"currency_code":"USD","in_stock":true},{"title":"GGG0013 - 7.3 grams","offer_id":45997313949765,"sku":"GGG0013","price":142.0,"currency_code":"USD","in_stock":true},{"title":"GGG0014 - 13.6 grams","offer_id":45997313982533,"sku":"GGG0014","price":251.0,"currency_code":"USD","in_stock":true},{"title":"GGG0015 - 12.2 grams","offer_id":45997314015301,"sku":"GGG0015","price":225.0,"currency_code":"USD","in_stock":true},{"title":"GGG0016 - 24.3 grams","offer_id":45997314048069,"sku":"GGG0016","price":436.0,"currency_code":"USD","in_stock":true},{"title":"GGG0017 - 19.7 grams","offer_id":45997314080837,"sku":"GGG0017","price":357.0,"currency_code":"USD","in_stock":true},{"title":"GGG0018 - 28.5 grams","offer_id":45997314113605,"sku":"GGG0018","price":510.0,"currency_code":"USD","in_stock":true},{"title":"GGG0019 - 2.8 grams - Included","offer_id":45997314146373,"sku":"GGG0019","price":15.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0598\/4105\/2741\/files\/ggg-e6ef4b9905.jpg?v=1791912328","url":"https:\/\/tomsboxofrocks.com\/products\/gadolinium-gallium-garnet-ggg","provider":"Tom's Box of Rocks","version":"1.0","type":"link"}