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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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Article
Sapphire Mining Along the Upper Missouri River

A GIA team from Education and Lab Services visited the upper Missouri River sapphire deposits in Montana. The first sapphire discovery in the Treasure State, these deposits have been mined for over 150 years. The team witnessed the mining at the richest source, Eldorado Bar, and purchased a mine run to enrich GIA’s corundum collection.

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Image of smartphone camera taking a photo of a gold brooch with gems
Article
How to Photograph Gems & Jewelry

Learn tips and tricks for taking great photos of gems and jewelry, even from your mobile device’s high-resolution camera.

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Article
Kuwaiti Alumna Takes ‘Timeless’ Designs to International Stage

She caught the attention of Hollywood, now Dana Al Nafisi is using her GIA education to garner respect and loyalty in her home country, Kuwait.

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Article
Sapphire Journey

The name “sapphire” can also apply to any corundum that’s not ruby, another corundum variety

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Sapphire Necklace
Article
Sapphire Description

Blue sapphire belongs to the mineral species corundum. It can be a pure blue but ranges from greenish blue to violetish blue. The name “sapphire” can also apply to any corundum that’s not red and doesn’t qualify as ruby, another corundum variety.

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Article
Insights From Inclusions

Natural gemstones are typically far more valuable than synthetic ones, so being able to identify them correctly is a powerful skill.

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Gemstone Durability: Design to Display

A treatise on the design, display, care and repair of fine gemstones.

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Abstracts; Winter 1991

This article, from the Winter 1991 issue of Gems & Gemology, is a compilation of abstracts of important gemology-related articles published outside of Gems & Gemology.

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Abstracts; Fall 1991

This article, from the Fall 1991 issue of Gems & Gemology, is a compilation of abstracts of important gemology-related articles published outside of Gems & Gemology.

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