New Azurite-Malachite Mixture from Peru
A Peruvian source yields a new azurite-malachite mixture.
Synthetic Moissanite Imitating Rough Diamond
A light green specimen, submitted as a rough diamond, is actually a synthetic moissanite.
The Very Deep Origin of the World’s Biggest Diamonds
Explores an exceptional family of diamonds, referred to as “CLIPPIR” (Cullinan-like, Large, Inclusion-Poor, Pure, Irregular, and Resorbed), that formed in a superdeep environment.
Katzenbach Designs、2年間でAGTAより2回受賞
GIAを卒業したデザイナーが、米国メイン州で産出されたトルマリン、精密なファセッティング、ファンタジーカットの宝石やカスタムデザインのジュエリーに注力します。
ツーソンで育った愛: GIA同窓会パーティーで地質学者とデザイナーに訪れた「信じられない幸運」
ツーソンで行われたGIA同窓会パーティーに出席するために並んでいた男女が、永遠に人生を変えるチャンスに巡り合いました。
デザイナーの「複雑で風変わりな」作品、ハリウッドとワシントンD.C.で注目の的となる
Los Angeles designer designs a popular political pendant, is earning national press coverage and finding fans among Hollywood A-listers.
Chart: Inclusions in Natural, Synthetic, and Treated Ruby
Provides a visual guide to the internal features of natural, synthetic, and treated rubies.
The World’s Biggest Diamonds: Windows into the Earth’s Deep Mantle
Real-Time Microradiography of Pearls: A Comparison Between Detectors
Compares the image quality provided by real-time microradiographic imaging (RTX) units fitted with two different detectors: an image intensifier (II) and a flat panel detector (FPD).
Data Supplement
Compares the image quality provided by real-time microradiographic imaging (RTX) units fitted with two different detectors: an image intensifier (II) and a flat panel detector (FPD).
宝石の巨匠: Drehers家と素晴らしい彫刻 (英語)
A look at the artistic heritage of the Drehers, an influential family of gem carvers in Idar-Oberstein, Germany.
The Beauty of Natural Green Diamonds
Preliminary Observations on Facet-Grade Ruby from Longido, Tanzania
Microscopic observation and trace element analysis is performed on rubies from Longido.
オーストラリア東部のアコヤ真珠養殖業 (英語)
Characterizes the akoya cultured pearls produced on the eastern shoreline of Australia using native Pinctada imbricate fucata mollusks.
2017年のオークションに関する報告： 依然として堅調なピンクとブルーのファンシーカラーダイヤモンド
購買する商品についてのバイヤーの見方が厳しくなっているものの、11億ドル（約1243億円）以上の価値のある非常に高級なダイヤモンド、カラー宝石やジュエリーが2017年のオークションで落札されました。
Suggested Reading on Rubies and Their Inclusions
Suggested Reading on Rubies and Their Inclusions
30-Year Marine Corps Veteran Fulfills Dream of Becoming a Field Gemologist
The rigors and often-harrowing conditions of gemology field expeditions are no match for 30-year Marine veteran with a love of gems.
Growth Tube Cluster in Sapphire
Surface-reaching growth tubes in a sapphire provide insight into the gem’s origin and treatment history.
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