Gemological Institute of America

Is This Really Good Turquoise? Who Knows?

The lack of a grading system for the popular stone has prompted a father-son team to spend the last five years working on one.

By Adria Malcolm for The New York Times

E! Entertainment Television Gemological Institute of America Jewels and Jewelry Winston, Brent Neale

Sometimes Jewelry Accidents Are Just Waiting to Happen

Experts suggest checking your gems regularly for loose or damaged stones.

By Ward Sutton

Cambodia Gemological Institute of America Givenchy, James Taffin de Jewels and Jewelry Metals and Minerals Perez, Katarina Tanzania

Zircons Are Not the Gem You Probably Think They Are

There is a lot of confusion between zircons, a mined mineral, and cubic zirconia, an inexpensive synthetic crystal. But jewelry designers know the difference.

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Conflict Minerals and Resources De Beers Group Diamonds Gemological Institute of America International Trade and World Market Jewels and Jewelry Kwiat, Greg Mines and Mining

Soon You May Know Exactly Where Your Diamond Was Mined

Several traceability systems have been introduced in the last six months, spurred by sanctions against Russian-mined stones.

By Victoria Gomelsky