Bonhams, Hong Kong, November 2009

Lot 592 A Ruby and Diamond Ring

The oval-cut ruby, weighing 4.15 carats, within a brilliant-cut diamond surround, mounted in 18k yellow gold and platinum, diamonds approximately 1.50 carats total, ring size 6¼.

Accompanied by a gemmological report from the Gemresearch Swisslab, stating that the ruby is natural vivid red (GRS type "pigeon's blood"), originates from Burma (Mogok, Myanmar) and has no indication of thermal treatment. Report number GRS2007-061948, dated 13th June 2007.