Spring 2024 Auction Highlights

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A Visit to Clarity Diamond’s CVD Facility

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“Soap Bubbles” in Yellow Sphene

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A Large Multicolored Natural Blister Pearl

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Unique Moiré-Pattern Metallic Inclusion in Paraíba Tourmaline

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“Conch Shell” in Diamond

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Fireworks in Ruby

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Pyritic Inclusions in Oregon Sunstone

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Prismatic Zircon in Kashmir Sapphire

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Laboratory Growth of Gem Materials and the Attempt to Replicate Nature

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Diffusion-Induced Blue Spinel-Like Layer on Natural Sapphire

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Gold-Plated Gold

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In Memoriam: Jean Claude Michelou

The gem and jewelry industry mourns the loss of one of its true leaders.

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Gemstone Artisan Keycaps

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Paraíba-Like Synthetic Sapphire

Two flame-fusion synthetic sapphires with a Paraíba-like color are examined at GIA’s Carlsbad lab.

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New Fluorite Deposit in Nigeria

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Tairus Hydrothermal Synthetic Sapphires Doped with Nickel and Chromium

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GIA Gübelin(古柏林)宝石项目:各种宝石(假蓝宝石 — 钽锑矿)

爱德华·古柏林博士收集的藏品中,有许多来自世界各地不常见的宝石。

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GIA Gübelin(古柏林)宝石项目:碧玺

碧玺的化学成分非常复杂,该类矿物中已识别出十几种不同的矿物种类。

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GIA Gübelin(古柏林)宝石项目:各种宝石(塔菲石 — 黝帘石)

Edward Gübelin(爱德华·古北林)博士收集的藏品中,有许多来自世界各地的罕见宝石。

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