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Dr. E. J. Gübelin Collection Peridot
Article
GIA's Gübelin 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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Dr. E. J. Gübelin Collection Kornerupine
Article
GIA's Gübelin Gem Project: Various Gems, Kornerupine - Natrolite

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

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Dr. E. J. Gübelin Collection Danburite
Article
GIA's Gübelin Gem Project: Various Gems, Danburite – Humite

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

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Gubelin Cordierite - Iolite 34802 300x169
Article
GIA's Gübelin Gem Project: Various Gems, Barite - Cuprite

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

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Dr. E. J. Gübelin Collection Apatite
Article
GIA's Gübelin Gem Project: Various Gems, Amblygonite - Axinite

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

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Dr. E. J. Gübelin Collection Zircon
Article
GIA's Gübelin Gem Project: Zircon

Although colorless when chemically pure, zircon is typically yellow-brown to brown. It also comes in red, blue, purple, and green. Because of its high brilliance and dispersion, colorless zircon has sometimes been used as a substitute for diamond in jewelry.

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Tourmaline
Article
GIA's Gübelin Gem Project: Tourmaline

Tourmalines have a very complex chemical composition, and more than a dozen mineral species are recognized within this group.

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Figure 1. These indicolite tourmalines (9.27 and 6.16 ct) from Zambia are among the variety of gems Virtu Gem offers. Photo by Robert Weldon.
More on Virtu Gem’s Ethical Supply Chain Practices

An update on Virtu Gem’s mission to improve artisanal mining and gem trading practices in Kenya, Malawi, and Zambia.

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Laura Mae, Amanda Jean, and Ilan Portugali are some of GIA’s featured graduates on the Alumni Collective website.
GIA Alumni Collective

The Alumni Collective celebrates GIA alums from all over the world.

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This brown negative crystal has an irregular shape.
Mobile Inclusions in a Decorative Quartz Object

Inspired fashioning showcases mobile inclusions in a polished quartz specimen, reminiscent of an hourglass.

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