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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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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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Gemstone Durability: Design to Display

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

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Raquel Alonso-Perez
Article
2014 Sinkankas Symposium on Peridot and Green Gems

Peridot and uncommon green gems were the theme of the 12th annual Sinkankas Symposium.

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