Laid out like an orchestra in a quiet gallery room, 40 colorful gems have one of the planet’s most distinguished conductors: a red diamond, 2.33 of the rarest carats in the world, shining like a ...

Rare and colorful gems, including an extremely rare pink diamond and the stunning Argyle Violet Diamond, are making their U.S. debut at the Natural History Museum of Los Angeles County from Dec. 16, ...