Chris Brown ‘s 2019 summer smash “No Guidance,” featuring Drake, becomes his first diamond-certified record by the Recording ...

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 ...

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 ...

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 ...

Diamonds and other gemstones are weighed in metric carats: one carat is equal to 0.2 grams, about the same weight as a paperclip. (Don’t confuse carat with karat, as in “18K gold,” which refers to ...