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A miner in northern Tanzania examines rhodolite.
Gemstone Guidebook Project

A project coordinated by GIA and the NGO Pact provides a valuable educational tool to women miners in Tanzania.

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Rough sapphires from Chila, Ethiopia.
Sapphires from Northern Ethiopia

A new source of sapphires is found in the Tigray region of Ethiopia.

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Article
Pyrope Garnet and Montana Sapphires Highlight Winter 2015 G&G

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

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Blue burn results
Article
Montana’s Gem Mountain Sapphire Mine: Sharing the Excitement of Mining with the Public

Join a GIA field team on an expedition to Gem Mountain, Montana, and witness the rarely seen sapphire heat treatment process and tourists passionately searching for treasures to turn into cherished jewelry.

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 Large open mussel shell with pink interior
Article
Freshwater Pearling in Tennessee

Natural pearl identification is one of the critical problems in pearl research. The DNA study of pearly mollusks and oysters facilitates solving this problem. To fulfill this goal, GIA sent a group from both research and education to Tennessee to sample the freshwater mollusks for DNA bar coding. Come with us to Camden, Tennessee, to see how we dive for pearly shells.

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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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Searching for Gemstones
Article
Romancing the Source: Cambodia

Accompany GIA field gemologists on a true gemstone mining adventure in Pailin, Cambodia. The area’s miners must combat heat, humidity, and deadly strains of malaria as they search the jungle for ruby and sapphire.

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Hands holding sapphire
Article
Gem Fossicking: Recreational Mining in Australia

Fossicking is a special type of mining activity that Australians love. Australia is a large country rich in many types of gem resources. Come to Australia with the GIA field gemology team to feel the passion of gem fossicking in the southern hemisphere.

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Dattaw and Baw Mar
Article
Visit Two of Mogok’s Most Important Mines with GIA

Join GIA’s field gemologists as they visit two of Mogok’s most important mines: the Dattaw ruby mine and Baw Mar sapphire mine.

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Fall 2016 Gems & Gemology Cover
Article
Fall 2016 G&G: CVD Synthetic Diamonds Survey, Reversible Color Change in Blue Zircon

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

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