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A large group of people outside on GIA’s Carlsbad, California  campus.
Article
Guardians of Trust: GIA’s Innovative Research, Instruments and Services

GIA’s services and instruments have grown in importance and impact as new gem treatments and laboratory-grown gems have entered the market.

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Summer 2016 Gems & Gemology Cover
Article
Summer 2016 G&G: Diamonds from Diavik, Responsible Sourcing and Fabergé Cossack Figures

A summary of the content found in the Summer 2016 issue of Gems & Gemology.

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Gems & Gemology Spring 2016 Cover
Article
Photoluminescence Review and Gem Material from Unusual Locales in the Spring 2016 G&G

A summary of the content in the Spring 2016 issue of Gems & Gemology.

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Article
Autumn 2015 G&G: Trapiche Emeralds, Synthetic Diamonds and a Large Diamond Source

G&G Brief presents an overview of the content of the Autumn 2015 issue of Gems & Gemology.

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Colombian Emeralds
Colombian Emerald Mining: Will the Giant Awaken?

Overview and commentary on the 2013 The Journal of Gemmology article “Peñas Blancas: An Historic Colombian Emerald Mine".

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RN Linares CVD
Article
CVD-Grown Synthetic Diamonds, Part 2: Properties

This article provides a brief overview of the properties of CVD-grown synthetic diamonds.

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Characterisation of the New Malossi Hydrothermal Synthetic Emerald

A new production of hydrothermal synthetic emeralds.

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Characterisation of Chinese Hydrothermal Synthetic Emerald

Synthetic emeralds grown hydrothermally in an alkali-free, chlorine-bearing solution have been manufactured in Guilin, China, since 1987.

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Growth Method and Growth-Related Properties of a New Type of Russian Hydrothermal Synthetic Emerald

A new type of Russian hydrothermal synthetic emerald is produced.

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Gemmological Investigation of a New Type of Russian Hydrothermal Synthetic Emerald

Tairus, in Novosibirsk, has produced yet another new type of Russian hydrothermal synthetic emerald.

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