

深圳:中国宝石和珠宝行业的前沿
所有的珠宝专家都很熟悉深圳这座城市。它是全球珠宝制造中心,也是中国快速发展的宝石和珠宝行业的领头羊。 加入 GIA 团队,我们将游览整座城市,更深入了解这座城市的顶级珠宝品牌。


切工:4C 的第四个标准
自 2006 年,GIA 开始将圆形明亮式钻石的切工等级纳入其鉴定证书,旨在以与颜色和净度相同的方式制定切工标准。 此切工分级系统以此前十年间进行的研究为基础;研究成果发表于《宝石与宝石学》(Gems & Gemology) 刊载的数篇文章中。

世界宝石产地浪漫之旅:巴西克鲁塞罗矿
跟随 GIA 实地宝石学家的脚步,前往巴西克鲁塞罗碧玺矿,开启一段真正的宝石开采冒险之旅。 该矿每年生产 8 吨碧玺,同样如此让人兴奋不已的有色宝石产地少之又少。




Investigation into Invalidated Reports Continues: GIA Offers No-Cost Confirmation Service



A Jadeite Bangle Simulant: Hydrogrossular Garnet
Bangles submitted for identification are found to be not jadeite jade, but hydrogrossular garnet, an unusual choice for this form.

Molybdenite in Topaz

Irradiated Green-Blue CVD Synthetic Diamonds (英语)
Advancing CVD growth technologies yield intensely colored, high-quality synthetic diamonds, such as the two green-blue synthetic materials seen in the New York lab.

Serpentine Cabochon with Unusual Olive Green Color

Assembled Cultured Blister Pearl with an Unusual Component
An assembled mabe pearl contains a fluted object, the function of which is unknown.

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