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Garnet
Article
GIA Gem Project
Garnet

Often thought of as a deep red gemstone, garnet can also be yellow, orange, green or brown – any color except blue.

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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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Demantoid from Val Malenco, Italy
Demantoid from Val Malenco, Italy: Review and Update

New data are presented for demantoid from Val Malenco, Italy, as obtained by classical gemological methods.

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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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Demantoid from Veracruz State, Mexico
Mexican Demantoid from New Deposits

Skarn deposits in the Veracruz state of Mexico yield new demantoid material.

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Topazolite
First Discovery of Topazolite in Mexico

Reports on the first discovery of fine topazolite garnet crystals in Mexico.

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New Chromium- and Vanadium-Bearing Garnets from Tranoroa, Madagascar

Pyrope-spessartine garnets from Tranoroa, in southern Madagascar, contain appreciable Cr and somewhat lower V contents.

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Pink to Pinkish Orange Malaya Garnets from Bekily, Madagascar

Malaya garnets from Bekily, Madagascar, are predominantly pink to pinkish orange, with some stones orange to red.

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Spessartine Garnet from Ramona, San Diego County, California

For most of the 20th century, the principal source of fine spessartine was the area around the Little Three mine near the town of Ramona in southern California.

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Diopside Needles as Inclusions in Demantoid Garnet from Russia: A Raman Microspectrometric Study

Straight, acicular, colorless solid inclusions in demantoid garnet from the Ural Mountains of Russia were investigated by laser Raman microspectrometry.

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