Plastic Deformation: How and Why Are Most Diamonds Slightly Distorted?
A look at plastic deformation, one of the most prevalent features in natural diamond.
Sapphire from Montana’s Secondary Deposits, Colombian Emerald Morphology, the 2023 Tucson Shows, and More…
An overview of the Spring 2023 Gems & Gemology content.
Sixth Annual Gianmaria Buccellati Foundation Award Winner
A graduate of GIA’s Jewelry Design program in London is the recipient of the 2022 Gianmaria Buccellati Foundation Award.
Morphology of Colombian Emerald: Some Less-Common Cases and Their Growth and Dissolution History
Evaluates the growth mechanisms of special morphological features in Colombian emerald, including possible relationships to trapiche emeralds and samples displaying the gota de aceite effect.
CVD Diamond Over 34 Carats Examined in GIA’s Hong Kong Laboratory
A look at the largest CVD diamond GIA has encountered to date.
GIA所有珍珠报告引入「孔雀绿」颜色范围注释
GIA美国宝石研究院将引入一项报告注释，在用黑蝶真珠蛤（Pinctada margaritifera）培育的养殖珍珠(一般称为大溪地珍珠)指定色彩中加入珍珠行业常用的色彩词汇「孔雀绿」（Peacock）。
GIA所有珍珠报告引入「孔雀绿」颜色范围注释
GIA美国宝石研究院将引入一项报告注释，在用黑蝶真珠蛤（Pinctada margaritifera）培育的养殖珍珠(一般称为大溪地珍珠)指定色彩中加入珍珠行业常用的色彩词汇「孔雀绿」（Peacock）。
GIA全年提供助学奖学金
GIA’s industry-leading and globally-recognized diploma and certificate programs educate professionals with the skills needed for success in the gem and jewelry industry.
Starry Night in Diamond
Cloud inclusions resembling stars at night are observed in a faceted diamond.
GIA图书馆的无汞采矿展览获奖
GIA图书馆的无汞采矿展览获奖
GIA于纽约主办招聘会–助业界发掘人才和机遇
GIA支持策办的Powered by GIA招聘会将于3月13日上午九时三十分到下午三时三十分在纽约市贾维茨会议中心（Jacob K. Javits Convention Center）举行，有兴趣在宝石和珠宝行业发展的人才千万不要错过。
GIA于纽约主办招聘会–助业界发掘人才和机遇
GIA支持策办的Powered by GIA招聘会将于3月13日上午九时三十分到下午三时三十分在纽约市贾维茨会议中心（Jacob K. Javits Convention Center）举行，有兴趣在宝石和珠宝行业发展的人才千万不要错过。
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