细节
A DIAMOND RING, BY JOHN DONALD
The marquise-cut diamond weighing 5.16 carats to the claw-set brilliant-cut diamond shoulders and split reeded shank, circa 1970, in original brown suede John Donald case
Accompanied by report No. 14885605 dated 17th March 2006 from the Gemological Institute of America (GIA) stating that the diamond weighing 5.16 carats is F colour, Internally Flawless