GIA 检验全球第二大钻石
2025 年 7 月，GIA 执行副总裁兼研发部和鉴定所首席执行官 Tom Moses（汤姆·摩西）和研发部副总裁 Wuyi Wang（王五一）博士等 GIA 研究人员检验了一颗重达 2,488.32 克拉的钻石原石
GIA 检验全球第二大钻石
2025 年 7 月，GIA 执行副总裁兼研发部和鉴定所首席执行官 Tom Moses（汤姆·摩西）和研发部副总裁 Wuyi Wang（王五一）博士等 GIA 研究人员检验了一颗重达 2,488.32 克拉的钻石原石
GIA 于 10 月 1 日推出更新版实验室培育钻石服务
GIA will launch revised evaluation services for D-to-Z laboratory-grown diamonds on October 1
GIA 于 10 月 1 日推出更新版实验室培育钻石服务
GIA will launch revised evaluation services for D-to-Z laboratory-grown diamonds on October 1
How-To Guide: Testing Diamonds and Gems using UV Light
GIA developed this guide so retailers can use fluorescence tests to help identify gems right in their own stores.
Two Exciting Panels Featured at AGS x GIA Converge
Industry leaders and some of GIA’s most experienced gemological experts will share their expertise and insights with participants at Converge
Two Exciting Panels Featured at AGS x GIA Converge
Industry leaders and some of GIA’s most experienced gemological experts will share their expertise and insights with participants at Converge.
GIA Evaluates Historic Diamonds in Christie’s Magnificent Jewels Auction
GIA has evaluated more than 30 rare and historically significant jewels ahead of Christie’s Magnificent Jewels auction, taking place on June 17 in New York.
Kyanite in Quartz
“Hummingbird” in Orangy Yellow Diamond
Evil Eye in a Flux-Healed Mong Hsu Ruby
Devitrified Glass “Pom-Poms” in Ruby
Dendritic Patterns in Emerald
Copper in Indonesian Chalcedony
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