Ponderosa Sunstone Update

The president of Oregon’s Desert Sun Mining and Gems provides the outlook for activity at the Ponderosa sunstone mine.

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Studies on Tourmaline, Sapphire, Cultured Pearl, and a Reliquary of Legend…

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Native Copper Inclusions in Indonesian Purple Chalcedony

Indonesian purple chalcedony containing interesting native copper inclusions is a first for the Carlsbad lab.

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历史文献清单:产自哥伦比亚的祖母绿

关于产自哥伦比亚的祖母绿的加注文献清单

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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.

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参观中国钻石交易中心

参观世界上最重要的钻石交易所之一,了解中国钻石业的运作。

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钻石研究为大陆的形成提供线索

钻石中包裹的矿物内含物揭示了大陆的构造,并帮助 GIA 研究人员确定钻石的年龄。

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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。

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蒙大纳州约戈蓝宝石的独特宝石学特征

看看这颗鲜艳的蓝色蓝宝石的开采和区别特征。

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Curved Banding in Flame-Fusion Synthetic Sapphires

The appearance of curved banding under short-wave UV easily identifies flame-fusion synthetic sapphire.

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历史阅读清单: 来自俄罗斯乌拉尔山脉的白金

关于俄罗斯乌拉尔山脉出产的铂金的加注读物清单

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历史文献清单:哀悼珠宝 – 惠特比煤玉

关于纳米比亚冲积钻石的加注文献清单。

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