Gemstones have been a topic of fascination to human beings for centuries, not just for their beauty, but also for how rare ...

Laid out like an orchestra in a quiet gallery room, 40 colorful gems have one of the planet’s most distinguished conductors: ...

one particular stone has been stealing the show. A rare 10-carat Mediterranean blue diamond from South Africa was on display in an exhibit featuring $100 million worth of the world’s rarest ...