A Rainbow of Fancy Colored Diamonds

In diamonds, rarity equals value. With fancy color diamonds—the ones outside the normal color range—the rarest and most valuable colors are saturated pinks, blues, and greens. In all cases, even very slight color differences can have a big impact on value.

‘Oppenheimer Blue’ diamond sells for over $57M, new record

The "Oppenheimer Blue" diamond sold recently for more than…