Gem News International
Gems & Gemology, Spring 2014, Vol. 50, No. 1

Gem Crystals – Tucson 2014

Duncan Pay
April 30, 2014
Tanzanite crystal with calcite crystals
Figure 1. Tiny calcite crystals adhering to the surfaces of this superb tanzanite crystal, along with the brown coloration around its base, are strong indicators that the material has not been heated. The crystal weighs 500.45 ct and measures approximately 8 cm in length. Photo by Eric Welch; courtesy of New Era Gems.

Inside Tucson 2014

Explore the 2014 Tucson Gem show with GIA.
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Inside Tucson 2013

Eighteen interviews with trade experts, from one of the world’s largest gem shows.
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Learn More About Tanzanite

why we love tanzanite
Explore tanzanite history, research, quality factors, and more in the GIA Gem Encyclopedia.
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