UV-Vis-NIR Reflectance Spectroscopy of Natural-Color Saltwater Cultured Pearls from Pinctada Margaritifera
Natural-color saltwater cultured pearls from Pinctada margaritifera were studied by diffuse reflectance UV-Vis-NIR spectroscopy.
GIAでデビューした素晴らしい宝石彫刻
Demantoid and Topazolite from Antetezambato, Northern Madagascar: Review and New Data
An important deposit of andradite, containing demantoid and topazolite varieties, has been mined near the village of Antetezambato in northern Madagascar since early 2009.
A Microstructural Study of Pietersite from Namibia and China
Pietersite has been described as a brecciated variety of tiger’s-eye.
An Imitation "Melo Pearl"
A 52.49 carat near-round “pearl” is submitted to the Bangkok laboratory as a “Melo pearl.”
Synthetic Gem Materials in the 2000s: a Decade in Review
An examination of synthetics in the marketplace over the first decade of the 2000s.
Winter 2010 Gem News International
A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry manufacturing techniques, and industry trends.
業界の専門家は、求職者に激励となる助言をします。
宝石・宝飾業界の専門家たちが、2010年10月22日に開催されたGIA（米国宝石学会）主催の第20回年次宝飾品キャリアフェアで、求職者に向けてアドバイスを述べた。
天然と合成のマラカイトを識別するための化学分析
LA-ICP-MS（レーザーアブレーション誘導結合プラズマ質量分析）技術は、微量元素の化学的性質に基づいて天然と合成のマラカイトを識別するために適用されます。
Developments in Gemstone Analysis Techniques and Instrumentation During the 2000s
The first decade of the 2000s continued the trend of using more powerful analytical instruments to solve gem identification problems.
遊色効果を持つエチオピアWollo（ウォロ）州Wegel Tena（ウェゲルテナ）産オパール (英語)
A new opal deposit was discovered in 2008 near the village of Wegel Tena, in volcanic rocks of Ethiopia’s Wollo Province.
Gem Localities of the 2000s
The past decade saw some impressive discoveries of diamonds and colored stones.
2000年代における宝石のエンハンスメントとその看破 (英語)
Advances in technology and increased demand for lower-priced gem materials contributed to the proliferation of new treatments throughout the first decade of the 2000s.
The Wittelsbach-Graff and Hope Diamonds: Not Cut from the Same Rough
Two historic blue diamonds, the Hope and the Wittelsbach-Graff, appeared together for the first time at the Smithsonian Institution in 2010.
A New Type of Composite Turquoise
Several conspicuously colored specimens marketed as dyed and/or stabilized turquoise were recently examined.
フラックス法熱処理とガラス充填処理されたモザンビーク産ルビー
「フラックス充填による部分的裂け目の修復」（FAPFH）およびガラス亀裂充填（GFF）を使用して高温加熱したモザンビークのモンテプエズ地域産のルビーについてのレポート。
Confocal Micro-Raman Spectroscopy: A Powerful Tool to Identify Natural and Synthetic Emeralds
More than 300 natural and synthetic emeralds from various sources were examined with confocal Raman spectroscopy.
GIA、犯罪捜査官らに宝石の世界を伝える
強く着色されたピンクのCVDラボ製造ダイヤモンド (英語)
Pink CVD lab-grown products can be separated from natural and treated-color natural pink diamonds by a combination of gemological and spectroscopic properties, which are explored in this study.
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