In the market for an important rock? December 10 at Christie’s New York sees the sale of The Evening Star, a pear-shaped diamond that weighs in at an impressive 39-carats. Fans of rare colored diamonds should get their paddles at the ready for The Vivid Pink, a 5-carat stone that is the largest fancy vivid pink potentially flawless diamond to ever be offered for sale at auction, which will be offered at Christie’s Hong Kong on December 1.