{"product_id":"gem-report-central-gem-laboratory","title":"Gem Report - Central Gem Laboratory","description":"\u003cp data-path-to-node=\"2,0,0\"\u003e\u003cspan class=\"citation-18\"\u003eCGL was established in Tokyo by \u003c\/span\u003e\u003cb data-path-to-node=\"2,0,0\" data-index-in-node=\"49\"\u003e\u003cspan class=\"citation-18\"\u003eMasao Namiki\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-18\"\u003e and \u003c\/span\u003e\u003cb data-path-to-node=\"2,0,0\" data-index-in-node=\"66\"\u003e\u003cspan class=\"citation-18\"\u003eAkio Takahashi\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-18 citation-end-18\"\u003e.\u003csup class=\"superscript\" data-turn-source-index=\"2\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e During Japan's rapid economic growth in the 1960s, the jewelry market was booming, but it lacked standardized grading systems, leading to inconsistent transactions. \u003cspan class=\"citation-17 citation-end-17\"\u003eNamiki and Takahashi traveled across Japan holding seminars to spread gemological knowledge before formally opening the lab in the Taito-ku district.\u003csup class=\"superscript\" data-turn-source-index=\"3\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"2,1,0\"\u003e\u003cb data-path-to-node=\"2,1,0\" data-index-in-node=\"0\"\u003eThe Formation of AGL (1981):\u003c\/b\u003e Recognizing the need for unified standards, CGL was a founding member of the \u003cb data-path-to-node=\"2,1,0\" data-index-in-node=\"106\"\u003eAssociation of Gemmological Laboratories (AGL), Japan\u003c\/b\u003e. Masao Namiki served as its first representative, helping to create the framework for the \"Strict Japanese Standards\" that are still respected today.\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"3\"\u003eTechnological Leadership\u003c\/h3\u003e\n\u003cp data-path-to-node=\"4\"\u003eCGL is renowned for its heavy investment in high-end scientific equipment, often moving faster than international labs to identify new treatments:\u003c\/p\u003e\n\u003cp data-path-to-node=\"5,0,0\"\u003e\u003cspan class=\"citation-16\"\u003e\u003c\/span\u003e\u003cb data-path-to-node=\"5,0,0\" data-index-in-node=\"0\"\u003e\u003cspan class=\"citation-16\"\u003eThe \"Cape Detector\" (1998):\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-16 citation-end-16\"\u003e CGL developed this world-first machine to differentiate between different types of diamonds, a critical step in identifying synthetic or treated stones.\u003csup class=\"superscript\" data-turn-source-index=\"4\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cbutton class=\"button ng-star-inserted\" aria-label=\"View source details. Opens side panel.\" data-hveid=\"0\" data-ved=\"0CAAQvoAQahgKEwiJ1pHA6u6RAxUAAAAAHQAAAAAQpgE\"\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/button\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003cp\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"5,1,0\"\u003e\u003cb data-path-to-node=\"5,1,0\" data-index-in-node=\"0\"\u003eAdvanced Analysis:\u003c\/b\u003e They were among the first to utilize \u003cb data-path-to-node=\"5,1,0\" data-index-in-node=\"56\"\u003eLA-ICP-MS\u003c\/b\u003e (Laser Ablation) and \u003cb data-path-to-node=\"5,1,0\" data-index-in-node=\"87\"\u003eFT-IR\u003c\/b\u003e spectroscopy for origin determination of rubies and sapphires, providing the high-level data that high-end collectors demand.\u003c\/p\u003e\n\u003cp data-path-to-node=\"5,2,0\"\u003e\u003cb data-path-to-node=\"5,2,0\" data-index-in-node=\"0\"\u003eHeart \u0026amp; Cupid™:\u003c\/b\u003e CGL is the primary authority for the \"Heart \u0026amp; Cupid\" (Hearts and Arrows) cut grade in Japan. Their specialized reports for this phenomenon are a staple for the Japanese bridal market.\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"6\"\u003eSignificance for Designers and Collectors\u003c\/h3\u003e\n\u003cp data-path-to-node=\"7,0,0\"\u003e\u003cb data-path-to-node=\"7,0,0\" data-index-in-node=\"0\"\u003eMarket Share:\u003c\/b\u003e\u003cspan class=\"citation-15 citation-end-15\"\u003e CGL holds the largest market share in Japan.\u003csup class=\"superscript\" data-turn-source-index=\"5\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e If you are sourcing a premium diamond or a rare colored stone from a Japanese wholesaler, it is highly likely to come with a CGL \"Sorting Memo\" or a full report.\u003c\/p\u003e\n\u003cp data-path-to-node=\"7,0,0\"\u003e\u003cspan class=\"citation-14\"\u003e\u003c\/span\u003e\u003cb data-path-to-node=\"7,1,0\" data-index-in-node=\"0\"\u003e\u003cspan class=\"citation-14\"\u003eThe Research Room:\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-14 citation-end-14\"\u003e CGL maintains Japan’s largest private gem research facility.\u003csup class=\"superscript\" data-turn-source-index=\"6\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e Their \"CGL News\" is a vital resource for the industry, often publishing the first warnings about new glass-filled treatments or synthetic screening challenges.\u003c\/p\u003e\n\u003cdiv class=\"source-inline-chip-container ng-star-inserted\"\u003e\n\u003cbutton class=\"button ng-star-inserted\" aria-label=\"View source details for citation from I LOVE DIAMONDS. Opens side panel.\" data-hveid=\"0\" data-ved=\"0CAAQvoAQahgKEwiJ1pHA6u6RAxUAAAAAHQAAAAAQpwE\"\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/button\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e","brand":"Gems.studio","offers":[{"title":"Default Title","offer_id":51405567852864,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0963\/0397\/2672\/files\/IMG_20251212_235852_1.jpg?v=1767561789","url":"https:\/\/gems.studio\/products\/gem-report-central-gem-laboratory","provider":"Gems.studio","version":"1.0","type":"link"}