Former GIA Governor Dr. Gordon E. Brown, Jr. Passes Away
CARLSBAD, Calif. – September 8, 2026 – Gordon E. Brown, Jr., a member of the GIA Board of Governors from 1988 to 2008 passed away in August.
2026 AWE & HKCEC
诚邀您莅临香港 HKTDC 展会，探索 GIA 的最新动态，包括仪器示范、零售支持工具、课程查询、现场收检服务及 GIA 宝石学家研讨会等活动。 同时，亦不要错过在会展 GIA展示的珍珠体验专区！
A Classification Scheme of Natural Radiation Stain Morphology and Texture on Diamond
Examines samples of Mona Lisa turquoise to identify their chemistry and structure, revealing copper as a major elemental component of the material.
历史文献清单: 历史上试图合成钻石的经验
Enumerating Diamond Cuts
Historical Reading List: Persian Turquoise
Historical Reading List: Ruby and Balas Ruby (Spinel)
Historical Reading List: Tourmaline and other Gem Minerals from Southern California
Historical Reading List: Peridot from Egypt
The Transformation of Diamond Cut Quality Grading: Where Are We Now?
GIA researchers trace the history and transformation of diamond cut grading, highlighting scientific breakthroughs that are reshaping how cut quality, brilliance, and visual performance are evaluated.
GIA 收购钻石溯源区块链平台 Tracr 30% 股权
John Cowley 加入 GIA 担任首席财务官
John Cowley Joins GIA as Chief Financial Officer
GIA在台湾开设新校区
GIA 台湾校区焕新启程‧崭新亮相
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