

Boulder Opal Mining with Rod Griffin (英语)
At the AGTA show, Rod Griffin (Rod Griffin Boulder Opals, Silverado, California, and Queensland, Australia) told us that the world market for all types of opals continues to be strong, but Australia’s opal industry is shrinking due to the costs, challenges, and changing regulations of mining.

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


Diamonds from the Deep: How Do Diamonds Form in the Deep Earth? (英语)
Surprisingly, diamonds do not all form in the same way, but rather they form in various environments and through varying mechanisms.

Gemological Analysis of Lightbox CVD-Grown “White” Diamonds (英语)
Lightbox, a De Beers company, has begun selling “white,” pink, and blue CVD laboratory-grown diamonds at a flat rate of $800 per carat.

Natural-Color Pink, Purple, Red, and Brown Diamonds: Band of Many Colors (英语)
Summarizes data collected by GIA on more than 90,000 natural diamonds in this color range and presents their gemological and spectroscopic properties.

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