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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.


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。



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。


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.

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