



Atypical Bead Cultured Pinctada maxima Pearls Nucleated with Freshwater Non-Bead Cultured Pearls

GIA 图书馆十佳数字化文献






Color Classification and Stability of Queen Conch Pearls
Color stability experiments show that the color of Queen conch shell and pearls may shift in hue and/or saturation under X-ray radiation or short-wave UV radiation.


新矿物以 GIA 理事 Barbara Dutrow(芭芭拉·达特罗)博士的名字命名以表敬意
加利福尼亚州卡尔斯巴德 — 2020 年 2 月 26 日 – 新发现的矿物种别 Dutrowite 属于碧玺族,与 GIA 理事 Barbara L. Dutrow(芭芭拉·L.·达特罗)博士同名。



The ABCs of Pearls Reveal Fascinating Aspects of Gems from the Deep
“The A-Z of Pearls,” with at least one pearl-related subject for each letter of the alphabet, was presented in Thailand recently.
《宝石与宝石学》(Gems & Gemology) 2019 年冬季刊有色宝石原产地
加利福尼亚州卡尔斯巴德 — 2020 年 2 月 3 日 — 最新一期的 GIA 专业季刊《宝石与宝石学》(Gems & Gemology) 2019 年冬季刊集中讨论了宝石学鉴定所有色宝石地理原产地鉴定的科学原理、问题和限制。

The Geographic Origin Dilemma
An overview of the geographic origin complexities facing the gem and jewelry industry today.

Geology of Corundum and Emerald Gem Deposits: A Review
Over the last two decades, knowledge of the formation of gem deposits has improved significantly. This article reviews the state of our knowledge of the geology and genesis of gem corundum and emerald deposits.

Geographic Origin Determination of Ruby (英语)
The world ruby market has undergone dramatic change in recent years, especially with the development of ruby mining in Mozambique. This contribution outlines GIA’s methods and criteria for establishing the geographic origin of ruby.

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