Cat’s-eye nephrite jade from Washington State. Washington Jade (Edmonds, Washington) made its Tucson debut at the AGTA show with nephrite jade from Washington State.

The World Jewellery Confederation (CIBJO) released the first edition of the Responsible Sourcing Book in January 2019.

An update on activity at the Coscuez emerald source, as well as ruby deposits in Mozambique.

Maine-based designer Derek Katzenbach discusses his education and inspiration.

A gem dealer gives back to the mining communities that have supplied gems over the course of his career.

In recent years, the colored stone world has seen a growing appetite for unusual colors.

Jeff Hapeman of Earth’s Treasury (Westtown, Pennsylvania) loves a gemstone with a good story.

Eye-catching stones at Jeffrey Bilgore’s AGTA booth.

A composite of synthetically grown and natural diamond was recently identified by the Carlsbad laboratory.

Moshe and Rachel Chalchinsky of Color Source Gems talk about current trends in the gem and jewelry trade.

An overview of the Spring 2019 Gems & Gemology content.

关于产自哥伦比亚的祖母绿的加注文献清单

Researchers from GIA’s Bangkok laboratory seek to identify low-temperature heat treatment in basalt-related blue sapphires.

加利福尼亚州卡尔斯巴德 — 2019 年 4 月 29 日 – 为了遵守适用的法律、法规和最佳实践，GIA 正在改进其“了解客户”(KYC) 计划。

加州卡尔斯巴德 – 2019 年 4 月 25 日 – 为了更好地了解最古老的大陆是如何形成的，研究人员对地球形成过程中被困在钻石中的微小矿物残留物进行了检测。

矿物内含物揭示了大陆的构造，并帮助研究人员确定钻石的年龄。

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。

Young patients at St. Jude Children’s Research Hospital recently explored the inner world of gems and minerals with a visiting team from GIA.

看看这颗鲜艳的蓝色蓝宝石的开采和区别特征。

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。