Fancy Deep Orange Diamond Ring 2.34 Carats. Price: $138,500. Courtesy M.S. Rau Antiques.

A rare 2.34-carat fancy deep yellowish-orange diamond displays a remarkable depth of color and brilliance in this extraordinary ring. Prized for both their beauty and rarity, yellowish-orange diamonds are among the most desirable and radiant of colored diamonds. This remarkable gemstone is certified by the Gemological Institute of America as being natural with a fancy deep grade, making it among the rarest colored diamonds on the market. Encircled by fine white diamonds, this remarkable gemstone positively glows in its classic 18k yellow gold setting.