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業界の専門家は、求職者に激励となる助言をします。

Gem and jewelry industry experts shared words of advice offered to job seekers at GIA’s 20th annual Jewelry Career Fair on Oct. 22, 2010.

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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。

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ブラウン·オレンジダイヤモンドの照射誘起欠陥を検出

照射を明確に示唆する、テーブルとパビリオンファセット間における著しく異なる蛍光性を示したダイヤモンドに関するレポート。

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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.

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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.

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Gem Localities of the 2000s

The past decade saw some impressive discoveries of diamonds and colored stones.

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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.

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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.

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A New Type of Composite Turquoise

Several conspicuously colored specimens marketed as dyed and/or stabilized turquoise were recently examined.

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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。

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Confocal Micro-Raman Spectroscopy: A Powerful Tool to Identify Natural and Synthetic Emeralds

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Possible “Sister” Stones of the Hope Diamond

A recent study compares a specially created model of the Hope diamond with recent computer models of the French Blue to determine if other stones could have resulted from either recutting.

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