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

At the AGTA show, Rod Griffin (Rod Griffin Boulder Opals, Silverado, California, and Queensland, Australia) told us that the world market for all types of opals continues to be strong, but Australia’s opal industry is shrinking due to the costs, challenges, and changing regulations of mining.

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

A summary of “The Ethics of Jewelry” panel, held at New York’s Metropolitan Museum of Art on January 25, 2019.

A graduate of GIA’s Jewelry Design program in Taiwan is the recipient of the Buccellati Award.

The president of Oregon’s Desert Sun Mining and Gems provides the outlook for activity at the Ponderosa sunstone mine.

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.

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

Mother-and-son team Laurie and Geoffrey Watt (Mayer & Watt, Maysville, Kentucky) noted that while there were plenty of customers at the AGTA show this year, the formula for success was a wide selection of materials and competitive pricing.

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

The Jewelry Development Impact Index (JDI), one of the initiatives from the second Jewelry Industry Summit in January 2017, has become the flagship project of the Minerals, Materials and Society (MMS) program at the University of Delaware. Patricia Syvrud, development manager of MMS, discussed the program, which she calls a “road map to responsibility.”

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

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。

看看这颗鲜艳的蓝色蓝宝石的开采和区别特征。

关于俄罗斯乌拉尔山脉出产的铂金的加注读物清单