Book Review: Women Jewellery Designers

Juliet Weir-de La Rochefoucauld著『Women Jewellery Designers(女性のジュエリーデザイナー)』のレビュー

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Green Crystals in Yellow Sapphires

Two yellow sapphires yield surprising green inclusions.

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Characterization of Blue Sapphires from the Mogok Stone Tract, Mandalay Region, Burma (Myanmar)

The Mogok Stone Tract of central Myanmar (Burma) is one of the world’s most famed sources of colored stones, particularly ruby, sapphire, and spinel.

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Chow Tai Fook(周大福)とGIA、ブロックチェーンを介して消費者にダイヤモンドグレーディングレポートを提供する

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煌びやかな庭園: 母なる自然がもたらすデザインのパラダイス

庭園で見かけられる可愛らしい生き物や花は、ビクトリア朝、アールヌーボーや現代のジュエリーデザインを美しく表現するのに好まれているモチーフです。

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地質学者の最新の使命: カラー宝石への愛を分かち合う

アフリカ生まれのカラーストーン専門家がアメリカを訪れた後、最愛の人と巡り合い、GGを取得し、新しいキャリアをスタートして人生が一変します。

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Turquoise from Western Arkansas

A report on turquoise from the only known U.S. deposit outside of the Southwest.

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Natural-Color Green Diamonds: A Beautiful Conundrum

Characterizes diamonds with exceptionally rare natural green color, based on GIA’s extensive database of samples.

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Type IIa Diamond with Extraordinary Etch Channels

Rare dissolution etch channels are seen in a natural diamond.

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Five CVD Synthetic Diamonds Greater Than Three Carats

The GIA lab examines five gem-quality CVD-grown diamonds in sizes that reflect the improving technology of the synthetic gemstone industry.

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Interview with a Kenyan Miner and Dealer

Miriam Kamau, owner of Mimo Gems Traders Ltd. in Nairobi, transformed from an office assistant to a dealer and miner to a representative of her country on the international stage of the colored gemstone trade.

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Outlook on Opals from Mexico and Australia (英語)

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

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Aquamarine from Pakistan

A gemological investigation of the aquamarine that has emerged from northern Pakistan in recent years.

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Update on Russian Demantoid Production

Alexey Burlakov shares insights on the current production of Russian demantoid and emeralds.

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Ponderosa Sunstone Update

John Woodmark provides an update on the Ponderosa sunstone mine in Oregon.

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Gianmaria Buccellati Foundation Award for Excellence in Jewelry Design

The first annual Gianmaria Buccellati Foundation Award for Excellence in Jewelry Design was presented to GIA graduate Catherine Zheng.

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Update from the Responsible Jewellery Council (英語)

The Responsible Jewellery Council (RJC) has announced plans to include colored stones and silver in the next revision cycle for its Code of Practices, which RJC members are certified against.

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Rex Guo: The Science and Art of Recutting Fine Gemstones

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Supply Chain Transparency and Beneficiation

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Iridescence in Metamorphic “Rainbow” Hematite

Analyzes the substructures that cause the intense iridescence observed in “rainbow” hematite from Minas Gerais, Brazil.

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