Christie's, Geneva, May 2000

Lot 337 A Sugarloaf Cabochon Sapphire and Diamonds Ring

Set with a sugarloaf cabochon sapphire weighing 10.30 carats to the stylized shield-shaped diamond shoulders and platinum hoop.

With certificate 9909187 dated 26 September 1999 from the GRS Gemresearch Swisslab, stating that the sapphire is of Burmese origin and shows no indication of thermal treatment.