Once in a while, we come across some spectacular and unusual gems. Fancy colored diamonds are among the most beautiful and valuable gems in the world.
A little bit about fancy diamonds from the GIA website:
Gem diamonds in GIA’s D-to-Z range usually decrease in value as the color becomes more obvious. Just the opposite happens with fancy color diamonds: Their value generally increases with the strength and purity of the color. Large, vivid fancy color diamonds are extremely rare and very valuable. However, many fancy diamond colors are muted rather than pure and strong.