Sotheby's, St. Moritz, February 2006

Lot 432 Impressive Sapphire and Diamond Ring

Claw-set with a cushion-shaped sapphire weighing 51.89 carats within a border of brilliant-cut diamonds, mounted in platinum, size 53.

Accompanied by GRS report no. GRS2005-110677 stating that the sapphire is of Burmese origin, with no indication of thermal treatment.