
Conservation Concerns over Use of Tridacna Shell in Imitation Pearls
The New York lab investigates the use of the shells of Tridacna species as imitation pearls.

Dumortierite in Rock Crystal Quartz
Prismatic blue and colorless dumortierite inclusions in rock crystal quartz are examined for the first time in the Carlsbad lab.

Cultured Pearl Market Update
An up-close look at the cultured pearl’s role in the gem and jewelry industry.

Amethyst From Morocco:An Update
GIA’s Bangkok lab investigates the gemological properties of Moroccan amethyst.

New Production of Brazilian Emerald from Minas Gerais
Emerald from the Belmont and Montebello mines of Minas Gerais, Brazil seen at the GJX show in Tucson.

Chinese Freshwater Pearl Culturing, Overall Market Summary
A review of Chinese freshwater cultured pearl production, with an update on the market for Tahitian, South Sea, and akoya cultured pearls.

Chrysocolla In Quartz
A gemological examination of chrysocolla in quartz from Tucson’s AGTA show.



GIA 鉴定所关于莫桑比克红宝石的低温加热处理的报告
采用内含物分析法、傅里叶变换红外光谱和激光剥蚀电感耦合等离子体质谱仪 (LA-ICP-MS) 观察接受低温加热后的莫桑比克红宝石变化的报告。




巴塞尔 GemFest:合成钻石有所提高,但检测技术也更加先进
来自美国宝石研究院和戴比尔斯的专家在 2015 年 3 月的巴塞尔国际钟表珠宝展上齐聚一堂,介绍检测和鉴定所有合成钻石的现行方法,为忧心忡忡的钻石和珠宝业注入信心。

宝石雕刻师捕捉动物的本性
Patrick Drehe(帕特里克·德雷尔)- 来自德国伊达尔-奥伯施泰因的第五代宝石雕刻师 - 与美国宝石研究院 (GIA) 加利福尼亚州卡尔斯巴德校区的学生分享他如何将宝石原石转变成精致、栩栩如生的动物雕刻品。


探秘巴西米纳斯吉拉斯的克鲁塞罗碧玺矿山
Andrew Lucas(安德鲁·卢卡斯),Duncan Pay,许焘 (Tao Hsu),Shane McClure,和 Pedro Padua 十一月 7, 2014

‘Perfect Storms’ Cloud BaselWorld Business
The world’s economic turmoil has begun to catch up with the superrich, who comprise most of the demand for the top gemstones, diamonds and designer jewelry pieces offered at BaselWorld 2015.


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