Sotheby's, Geneva, November 1999

Lot 323 Sapphire and Diamond Ring

Claw-set with an oval-shaped sapphire weighing 15.67 carats, flanked by fancy-shaped diamonds, mounted in 18 karat white gold, size 52.

Accompanied by GRL report no. 9612029 stating that the sapphire is of Sri Lankan origin, no indication of thermal treatment.