

Observations on the Heat Treatment of Basalt-Related Blue Sapphires
Researchers from GIA’s Bangkok laboratory seek to identify low-temperature heat treatment in basalt-related blue sapphires.
GIA 通过改进的“了解客户”计划来推广最佳实践
加利福尼亚州卡尔斯巴德 — 2019 年 4 月 29 日 – 为了遵守适用的法律、法规和最佳实践,GIA 正在改进其“了解客户”(KYC) 计划。


戴比尔斯供应增加,FTC 对“环保”声明发出警告
戴比尔斯积极应对波动,FTC 发出有关实验室制造钻石的警告。另附:揭开 302.37 克拉 Graff Lesedi La Rona(我们的光)的神秘面纱。

通过 GIA 的零售商支持计划推广有色宝石
加利福尼亚州卡尔斯巴德 – 2019 年 4 月 8 日 – 参加 GIA 零售商支持计划的零售商现在可以使用进一步增加的有色宝石推广材料向客户讲述这些美丽宝石的故事。





图森之行激起地质教授和出版商的返校热情
身为地质学家和出版商的他取得了研究宝石学家 (GG) 文凭,因此可以和访问他所运营的地球科学网站——Geology.com 的访客分享更多有关宝石材料的信息。

历史文献清单:产自纳米比亚的冲积钻石


Pink Diamonds, Russia’s Amber Room, and More…

The Color Origin of Gem Diaspore: Correlation to Corundum
Examines the color origin of color-change diaspore, known commercially as Zultanite, and compare the effectiveness of the chromophores it shares in common with corundum.

The Gemological Characteristics of Pipi Pearls Reportedly from Pinctada maculata
Reveals the internal features and spectroscopic data of these small natural pearls and offers the means of separating them from pearls of related mollusk species.

The History and Reconstruction of the Amber Room
Chronicles the history of this cultural landmark, originally assembled for the Prussian king between 1701 and 1714, and its reconstruction by the Soviet Union starting in 1979.

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