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Ruby-bearing gravel bed in Mugloto.
Update on Gemstone Mining in Northern Mozambique

Recounts an expedition to Mozambique’s important deposits of ruby, spinel and tourmaline, which have yet to be fully explored.

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Hunting for Spinels in Vietnam
Article
Seek the World’s Most Vivid Blue Spinel with GIA Field Gemmologists

Join GIA’s field gemmologists as they seek Vietnam’s exotic sky-blue spinel.

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Mogok
Article
Romancing the Source: Myanmar

Accompany GIA field gemmologists on a true gemstone mining adventure in exotic Mogok, Myanmar. This legendary source has been called “The Valley of Rubies”, but also produces a variety of other gemstones.

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Montana Sapphires Video
Article
Romancing the Source: Montana Sapphires

Join a GIA field team on an expedition to Montana and let us take you to the sapphire mines, where you can see the natural beauty of the mining area as well as meet the rugged individualists who mine there.

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Hunting for Ruby, Sapphire, and Spinel in Mogok, Myanmar
Article
GIA Field Gemmologists seek Ruby, Sapphire and Spinel in Mogok, Myanmar

Venture deep underground with GIA’s Field Gemmologists Vincent Pardieu and Dr. Aaron Palke as they explore the geology of Mogok’s ruby, sapphire and spinel deposits.

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Article
Spring 2015 G&G Examines Blue Spinel, Chinese Jewellery Design and the Latest in Synthetics

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

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Update on gemstone mining in Luc Yen, Vietnam

Explores the emergence of the Luc Yen area as a producer of corundum, spinel, tourmaline and other coloured stones.

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A Status Report on Gemstones from Afghanistan

An overview of the plentiful and various gem materials being discovered and produced in Afghanistan.

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Sri Lanka: The Gem Island

An overview of the many types of gem-quality material, and its inclusions, currently found in Sri Lanka.

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Abstracts; Summer 1991

From the Summer 1991 issue of Gems & Gemmology, a summary of important gemmology-related articles published in other journals.

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