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GIA Gem Project
Various Gems (Olivine - Rutile)

Among the collection assembled by Dr. Edward Gübelin are a number of uncommon gemstones from many worldwide localities.

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Multi-colored gems are superimposed on an image of glacier peaks.
Article
Gems and Minerals from the Subarctic

Circumnavigate the boreal reaches of the globe to explore gems from polar regions.

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Vietnamese peridot nodules, rough stones, and faceted samples
Peridot from the Central Highlands of Vietnam: Properties, Origin, and Formation

Analyzes the gemological and geochemical characteristics of peridot from the Gia Lai province alongside specimens from other localities to gain insight into its formation.

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Peridot from Sardinia, Italy
Characterization of Peridot from Sardinia, Italy

Gem-quality peridot is occasionally found as mantle xenoliths within basalts near Pozzomaggiore.

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Worker attaching wax forms
Article
Shenzhen: The Frontier of China’s Gem and Jewelry Industry

All jewelry professionals are familiar with the city of Shenzhen, a global jewelry manufacturing center and a leader of China’s fast-growing gem and jewelry industry. Join the GIA team as we tour the city and discover more about its leading jewelry brands.

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Peridot as an Interplanetary Gemstone

The stony-iron meteorites known as pallasites are famed for the areas of yellowish green olivines they contain.

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Kilbourne Hole Peridot

This little-known source of gem-quality peridot, located in southwestern New Mexico, produces small but brilliant gems.

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The Gemological Characteristics of Chinese Peridot

Chinese peridot is similar to peridots from other localities.

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A Survey of the Gemstone Resources of China

China has identified many deposits with significant potential to produce gemstones; various species are discussed.

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Peridot from Tanzania

Tanzanian peridot is compared with peridots from other localities.

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