25 janvier 2014
18 karat white gold, tanzanite and diamond ring, Sifen Chang
18 karat white gold, tanzanite and diamond ring, Sifen Chang. Photo Sotheby's Designed as a cluster of seven tumbled tanzanite beads weighing 80.50 carats, accented by vines set with round diamonds weighing .68 carat, size 6¼, with Chinese characters...