15 septembre 2013
18 karat white gold, pink star sapphire and diamond ring, Sifen Chang
18 karat white gold, pink star sapphire and diamond ring, Sifen Chang. Photo: Sotheby's. The oval cabochon pink star sapphire weighing 37.02 carats, framed and accented by round diamonds weighing 1.82 carats, size 5¾, with Chinese characters for Sifen...