另一颗 1000(或 3000)克拉的钻石是否指日可待?

探讨为何近年来进入市场的超大钻石数量大幅增长。

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从军 30 载的海军陆战队老将实现了成为实地宝石学家的梦想

宝石学实地考察所面临的艰苦条件与从军 30 载的海军老将对宝石的热爱相比,简直微不足道。

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感恩乐于奉献的校友会成员的时节

特别感谢为世界各地的 GIA 校友会分会协调教育及联络活动的校友志愿者们。

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博士后项目为科学家带来千载难逢的研究机遇

GIA 的博士后项目让研究人员在实验室里就能获取宝石学数据和设备,接触到稀有罕见的大型宝石。

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Diamond Growth from C–H–N–O Recycled Fluids in the Lithosphere: Evidence from CH₄ Micro-inclusions and δ¹³C–δ¹⁵N–N Content in Marange Mixed-habit Diamonds

Article was published in Lithos Volume 265, 68-81.

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现象凸圆面宝石的光学效应

了解一些宝石的结构、内含物和性质如何通过与光线的互动来形成非凡的视觉效果。

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善本书籍项目让宝石与珠宝的历史触手可及

保存在 GIA 图书馆的 200 多本具有重大历史意义的书籍已经进行了数字化处理,可供读者免费查阅。

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《宝石与宝石学》(Gems & Gemology) 2016 年秋季刊:CVD 合成钻石调查,蓝色锆石可逆的颜色变化

内容摘要详见《宝石与宝石学》(Gems & Gemology) 2016 年秋季刊。

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Book Review: Stoned: Jewelry, Obsession, and How Desire Shapes the World

Review of Stoned: Jewelry, Obsession, and How Desire Shapes the World by Aja Raden

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Book Review: Gems & Crystals: From One of the World’s Great Collections

Review of Gems & Crystals: From One of the World’s Great Collections, by George E. Harlow and Anna S. Sofianides.

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Book Review: Jewelry by Suzanne Belperron: My Style is My Signature

Review of Jewelry by Suzanne Belperron: My Style is My Signature by Patricia Corbett, Ward Landrigan, and Nico Landrigan.

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A New Deposit of Gem-Quality Grandidierite in Madagascar (英语)

Reviews the properties of exceptionally pure grandidierite from a new source.

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Sapphires from the Sutara Placer in the Russian Far East (英语)

Studies the formation and chemical composition of the largely unexamined alluvial sapphires from Russia’s Jewish Autonomous District.

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Iridescent Inclusion in Tanzanite

A tanzanite displayed crystallographically aligned, vividly iridescent colors resulting from fine separations along the stone’s cleavage planes.

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Unusual Purple Inclusion in Emerald

Microscopic examination of an emerald revealed a purple banded inclusion with the appearance and optic character of fluorite.

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Screening of HPHT Synthetic Melee With Natural Diamonds

A screening service allows the lab to screen for synthetic material in diamond melee parcels.

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Large Aqueous Primary Fluid Inclusion in Amethyst

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Aquamarine from a New Primary Deposit in Mexico

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Charting the Increasing Availability and Quality of CVD Synthetic Diamonds

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Emeralds and the Power of the Pink City

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