{"product_id":"gadolinium-gallium-garnet-ggg","title":"Gadolinium Gallium Garnet (GGG)","description":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eGadolinium Gallium Garnet (GGG).  \u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003eGGG is of the class of synthetic gems deemed \"Historic Diamond Simulants.\"  \u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eOriginally developed for scientific applications it was used as a diamond simulant in the 1970s but was quickly replaced by YAG for its higher hardness.  GGG is not to be overlooked though because it has a much closer appearance to natural diamond than YAG does.  GGG is also a considerably more rare diamond simulant that is typically only offered in white.  We are thrilled to be able to offer this classic white color and a teal colored stone.  \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eGGG crystals are produced by the Czochralski method.  It has an RI of 1.97 - 2.02, a DI of 38, and a Mohs hardness of 6.5 - 7.5. \u003cmeta charset=\"UTF-8\"\u003eAnd with a SG greater than 7, it's one of the most dense gem material available. It cuts and polishes extremely well.  \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eGGG is an interesting and rare piece of history for the collector and jeweler that joehenleyrough.com is elated to supply.  They absolutely sparkle!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e12.940 grams \/ 64.70 carats \/ 13 x 12 x 11 mm \/ clean\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e*Cutting\/polishing advice from an expert:\u003c\/p\u003e\n\u003cp\u003ePrepolishes easily with a 3,000 grit and polishes superbly with 100,000 grit.\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e*Faceted gemstones cut from our stock for reference\u003c\/span\u003e\u003c\/p\u003e\n\u003ciframe src=\"https:\/\/player.vimeo.com\/video\/654722052?h=50f08e5773\" width=\"640\" height=\"360\" frameborder=\"0\" allow=\"autoplay; fullscreen; picture-in-picture\" allowfullscreen\u003e\u003c\/iframe\u003e","brand":"Joe Henley Rough \u0026 Gemstones","offers":[{"title":"Default Title","offer_id":50438245253223,"sku":"lwr1791883733584","price":101.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0597\/1601\/0087\/files\/gadolinium-gallium-garnet-ggg_1.jpg?v=1791883740","url":"https:\/\/urbanstepfashion.shop\/products\/gadolinium-gallium-garnet-ggg","provider":"My Store","version":"1.0","type":"link"}