Sotheby's, Geneva, May 2003

Lot 53 Sapphire and Diamond Ring

The oval sapphire weighing 10.71 carats within a border brilliant-cut diamonds weighing approximately 2.80 carats in total, mounted in platinum, size 54.
Accompanied by GRS report no. 2002-051114 stating that the sapphire is of Burmese origin, with no indication of thermal treatment.