書籍: The Collector's Guide to the Minerals of New York State(ニューヨーク州の鉱物コレクターズ ガイド)

The Collector's Guide to the Minerals of New York State(ニューヨーク州の鉱物コレクターズガイド)の書評

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ダイヤモンドを欠けから保護する方法

ダイヤモンドが欠ける原因、ダイヤモンドの欠けを防ぐ8つのヒントの詳細については、こちらをご覧ください。

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デザイナーが愛するブラジルとその宝石 、すべての作品に込められた輝き

宝石とジュエリーの専門家の三代目となるKaryna Senaは、彼女のデザインのひとつひとつにブラジルの豊かな文化への活力とjoie de vivre(生きる喜び)を吹き込みます。

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Responsible Mining, a Trek to Chivor, and a Dash of Fabergé

An overview of the Summer 2016 Gems & Gemology content.

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Tucson: A Showcase of Colored Gemstone Innovation

An overview of the Spring 2016 Gems & Gemology content.

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Identification of “Pistachio” Colored Pearls Treated by Ballerina Pearl Co.

A report on the color treatment process for these intensely greenish yellow to yellowish green cultured pearls and the techniques for identifying them.

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Chrysoberyl from the New England Placer Deposits, New South Wales, Australia

Examines a collection of chrysoberyl samples from these sapphire placer deposits to determine their distinct mineralogical and chemical properties.

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Gem-Quality Serpentine from Val Malenco, Central Alps, Italy

A detailed characterization of serpentine from this mountain locality, focusing on its use as a gem material.

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An Introduction to Photoluminescence Spectroscopy for Diamond and Its Applications in Gemology

Presents the underlying physics and methodology of this analytical technique, which has become an essential tool in identifying treated and synthetic diamonds.

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Variscite from Central Tajikistan: Preliminary Results

A look at the gemological properties and chemical composition of this light blue to light green to green gem material, which is suitable for cabochon cutting.

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Quench-Crackled Blue Synthetic Spinel

A synthetic spinel has undergone quench-cracking treatment, possibly to make it appear as a natural specimen.

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Quarterly Crystal: Quartz and Lazulite

Lazulite crystals grow on and within a quartz specimen from Yukon Territory, Canada.

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Ring with a CVD Synthetic Melee Diamond (英語)

A round-cut specimen set in a ring is the first mounted CVD synthetic melee diamond identified by GIA.

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Largest Blue HPHT Synthetic Diamond (英語)

Analysis of a 5.03 ct HPHT-grown blue synthetic diamond, the largest ever examined by GIA.

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Analysis of Yellow Diamond Melee for Color Treatment and Synthetics (英語)

A parcel revealed to contain natural, treated, and synthetic diamonds reinforces the importance of identification.

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Update on the Scorpion Tsavorite Mine

A look at the resumed operations and new production of Kenya’s Scorpion tsavorite mine.

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Tucson 2016

An overview of the 2016 gem shows.

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Paula Crevoshay’s American Collection, Plus Jewelry with Nontraditional Gemstones (英語)

Lesser-known gem materials are seen in pieces alongside a collection created as an artistic inheritance for future generations of jewelry fans.

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Large Colorless HPHT Synthetic Gem Diamonds from China (英語)

A report on the HPHT growth of large, gem-quality colorless synthetic diamonds in China

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“Star of David” Spinel Twin Crystal with Multiphase Inclusions from Mogok

A rare spinel, featuring a Star of David pattern and multiphase inclusions, is examined in Bangkok.

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