AN IMPORTANT SINGLE-STONE CABOCHON SAPPHIRE RING
Set with a high-domed cabochon sapphire weighing 17.03 carats with baguette and bullet-cut diamond shoulders to the platinum hoop, size 7
With certificate CS 30992 dated 15/7/1997 from the American Gemological Laboratories stating that it is the opinion of the laboratory, based on the weight of evidence, that the origin of this material would be classified as Burma (Myanmar). Heat enhancement: None