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Madagascar’s Zahamena National Park
Article
GIA Field Gemmologist Documents Madagascar Ruby Rush

Join GIA’s recent field expedition to the ruby rush in Madagascar’s Zahamena National Park.

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Discover Mozambique’s Montepuez Ruby Mine
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Discover Mozambique’s Montepuez Ruby Mine with GIA’s Field Gemmologists

See inside the world’s most productive ruby mining operation with GIA’s field gemmology team.

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Article
On the Trail of Africa’s Hidden Gems with GIA’s Field Gemmologists

Visit gem mining areas in Madagascar, Kenya, Tanzania, Zambia and Mozambique with GIA’s field gemmologists.

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Two blue sapphires side by side
Article
G&G Announces Most Valuable Article Awards

G&G announces the winners of the Dr Edward J. Gübelin Most Valuable Article Awards for 2019.

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Ruby
Article
Ruby Description

Ruby is the most valuable variety of the corundum mineral species, which also includes sapphire.

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Article
Ruby Journey

Ruby is the most valuable variety of the corundum mineral species, which also includes sapphire

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A face-up view of a cushion cut diamond with blue color.
Article
Gems & Gemology’s 7 Most Unusual Encounters from 2019

Check out some of the most interesting and unusual diamonds and coloured stones submitted to GIA’s laboratories in 2019.

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A round, bright red gem displayed on a dark gray background.
Article
The Red Hot Gems of Summer

These red, pink and orange hued gems evoke passion and excitement – and are sure-fire accessories for sultry summer days.

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Looking down the crystal axis of a back-lit 58.83 ct trapiche emerald
Article
Emerald: The Superstar of Trapiche Gemstones

Trapiche emeralds, which display a distinct six-spoke wheel pattern, set the standard as some of the finest and most spectacular crystals ever unearthed.

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Spring 2000 Gem News International

A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewellery manufacturing techniques and industry trends.

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