U.S. Holiday Hours

The Carlsbad and New York laboratories will be closed Mon., July 3 and Tues., July 4. The Carlsbad and New York schools will be closed Tues., July 4.
All locations will resume regular business hours on Wed., July 5.

featured Research & News

Gem News International

Fine Gems and Update from Myanmar

A look at top-quality gems and insight into a delegation’s visit to gem mines in Myanmar.
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MICRO-WORLD

Ametrine Optical Dishes: Windows into the Effects of Crystal Structure

Optical activity is studied using a polished block of ametrine.
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Micro-World

Imitation Cat’s-Eye Pen “Pearls”

Imitation pearls show kaleidoscopic colors with illumination.
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Lab Note

Pink Sapphire Filled with Bismuth-Based Glass

A sapphire with a color not commonly seen in the lab is found to have a glass filling.
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Gem News International

Conversation with Gemfields

An exclusive interview with Ian Harebottle, CEO of Gemfields.
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