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。

关于俄罗斯乌拉尔山脉出产的铂金的加注读物清单

加利福尼亚州卡尔斯巴德 – 2019 年 3 月 28 日 – 4 月 30 日，GIA 将推出 GIA 钻石原产地证书服务，用以确认成品钻石的产地。

加利福尼亚州卡尔斯巴德 – 2019 年 3 月 28 日 – 4 月 30 日，GIA 将推出 GIA 钻石原产地证书服务，用以确认成品钻石的产地。

关于纳米比亚冲积钻石的加注文献清单。

复兴主义珠宝的灵感来源于过去 — 能将我们与丰富的人类文明史联系起来。

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。

自古以来，蝴蝶结一直都是珠宝与时尚的流行图形和修饰格调，它频频出现，又不断演变，反映每个时代的风格。

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.

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.

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.

Surprisingly, diamonds do not all form in the same way, but rather they form in various environments and through varying mechanisms.

Provides a visual guide to the internal features of natural, synthetic, and treated diamonds.

Explains the reactions responsible for the formation of a well-developed reaction rim of spinel that surrounds the corundum core in some specimens from this deposit.

Chatoyant vivid blue Brazilian tourmaline is examined in the Bangkok lab.

An exceptional ruby specimen is identified with a Montana origin in the Carlsbad lab.

Lightbox, a De Beers company, has begun selling “white,” pink, and blue CVD laboratory-grown diamonds at a flat rate of $800 per carat.

Three freshwater pearls, two blister and one loose, were examined in the New York lab.