The May birthstone — emerald — is considered one of the three most desirable colored gemstones available. Alongside rubies and sapphires, emeralds have been mined and used by humans for decoration for ...

Add Yahoo as a preferred source to see more of our stories on Google. Emeralds have, for centuries, captivated empires, royals, and the generally well-heeled and powerful. Egyptian queen Cleopatra was ...