Established in 1931, the Gemological Institute of America (GIA) is the world’s foremost authority on diamonds, colored stones, and pearls. A public benefit, nonprofit institute, GIA is the leading ...

Millions of diamonds are graded in GIA Laboratories annually. However, more and more counterfeit diamonds have shown up in the trade, becoming an increasing concern. To address this issue, a portable ...

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But the Mohs scale is deceptive. The steps between the minerals are not evenly spaced. For example, diamond is only one number away, but it’s many times harder than gems in the corundum family.

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Black Desert Mobile has become one of the most prosperous large-scale mobile MMORPGs in the market, where users can join different online activities including world boss fights or mass PvP battles.

Diamond Beach in Iceland is an 11-mile stretch of black sand covered with icebergs and is located on the country’s southern coast. The beach has become a major attraction for tourists ...

A new documentary traces Humphrey Bogart’s development from stage actor to the embodiment of brooding cinematic cool. By Ben Kenigsberg Starring Dwayne Johnson and Chris Evans, this Christmas ...