A black opal cabochon set in a ring displays vivid orange play-of-color.

Reports on the recent production of precious and common opal from a centuries-old locality.

A newly developed treatment creates a phantom structure in opal visually similar to natural phantom opal.

At the AGTA show, we spoke with Natassa Patel, who along with her mother, Salma, owns and operates True Blue Opals and Gems.

看看在亚当·桑德勒电影《未切割的切割》中扮演主要角色的粗糙蛋白石。蛋白石的真正宝石学和来源信息是什么？

一支抒情的舞蹈：时而一个大踢腿，大胆闪烁着丰富的色彩，时而是细碎的舞步，闪现出星星点点的光芒。

A first-person account of cutting a 3,019 ct piece of white opal to create a 1,040 ct gem with play-of-color across the surface.

Jürgen Schütz discussed the opal sourcing and cutting activities of the German firm Emil Weis.

At the AGTA show, Rare Earth Mining Co. (Trumbull, Connecticut) displayed an unexpected material: Indonesian opal reportedly from West Java.

Chatoyancy, rarely seen in play-of-color opal, is observed in Ethiopian material.

World-renowned jewelry artist Paula Crevoshay displays some of her newest pieces at the Tucson gem shows.