次のタイプで宝石を見る：
器具類
記者発表の検索結果
In Memoriam: Andrew Cody
Black Opal with Unique Play-of-Color
A black opal cabochon set in a ring displays vivid orange play-of-color.
Slovak Opal: A New Life for a Historical Gem
Reports on the recent production of precious and common opal from a centuries-old locality.
A New Treatment: Creating Phantom Structure in Opal
A newly developed treatment creates a phantom structure in opal visually similar to natural phantom opal.
Conversation with True Blue Opals and Gems
At the AGTA show, we spoke with Natassa Patel, who along with her mother, Salma, owns and operates True Blue Opals and Gems.
『アンカット・ダイヤモンド』のエチオピア産オパールの現実的な宝石学
アダム サンドラー主演の映画『 Uncut Gems（アンカット・ダイヤモンド）』で物語の鍵となるオパールを紹介しながら、オパールの現実的な宝石学と産地に関する情報を説明します。
The Challenges of Cutting a Large Gem Opal Rough
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.
Outlook on Opals from Mexico and Australia (英語)
Jürgen Schütz discussed the opal sourcing and cutting activities of the German firm Emil Weis.
Opal from West Java, Indonesia
At the AGTA show, Rare Earth Mining Co. (Trumbull, Connecticut) displayed an unexpected material: Indonesian opal reportedly from West Java.
New Designs from Paula Crevoshay
World-renowned jewelry artist Paula Crevoshay displays some of her newest pieces at the Tucson gem shows.
Golden Rutilated Quartz Artisanal Mining Community
Plans to develop a collective in a remote Brazilian rutilated quartz mining community are unveiled.
.jpg "YMAL GIA Ed")
