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GIA iD100TM Gem Testing Device

With the growing availability of synthetic diamonds in the marketplace, full disclosure and confidence in knowing what you are buying is now more important than ever. GIA has developed a sophisticated and easy-to-operate desktop instrument to screen for these stones.

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GIA Melee Analysis Service

Learn more about the GIA Melee Analysis service and how to submit stones for analysis and sorting.

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Rough CLIPPIR diamonds
The Very Deep Origin of the World’s Biggest Diamonds

Explores an exceptional family of diamonds, referred to as “CLIPPIR” (Cullinan-like, Large, Inclusion-Poor, Pure, Irregular, and Resorbed), that formed in a superdeep environment.

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2018 Continuing Education Recognition Program Form

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<em>Gota de Aceite</em> in an emerald from Zambia.
Gota de Aceite in a Zambian Emerald

A phenomenon usually seen in Colombian emeralds is found in a specimen from Zambia.

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Book Review: Making Steampunk Jewellery
Article
Book Review: Making Steampunk Jewellery

Review of Making Steampunk Jewellery by Nikki Druce.

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A heart-shaped piece of pink drusy hangs from a gold chain.
Article
Dreamy Drusy: Minute Crystals Shimmer in Dramatic Designs

Drusy jewelry has surged in popularity in recent years. Celebrities wear it on the red carpet and designers clamor for it at gem shows.

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Loose and mounted green diamonds.
Article
Exhibition Review: Green Diamonds: Natural Radiance

Review of Green Diamonds: Natural Radiance at the Natural History Museum of Los Angeles.

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A 2.11 carat radiant shaped Fancy red diamond  in a spotlight
Article
Is the Swan Song for Argyle Pink Diamonds Close at Hand?

The flow of Argyle fancy pink diamonds may end in 2020 if prices for the other stones the mine produces don’t improve. Plus: More diamond updates.

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Seven people sit around a conference table.
Article
2018: A Banner Year for GIA Alumni to Stay Connected and Informed

GIA Alumni Association

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