Christie's, UAE, April 2010

Lot 169 An Impressive Ruby and Diamond Ring

Mounted with an oval-shaped ruby weighing 12.99 carats to the pear-shaped and tapered baguette-cut diamond trifurcated shoulders with plain hoop, ring size 6½, stamped "750"

Accompanied by report no. GRS2005-040975 dated 26 April 2005 from GRS Gem Research Swiss Lab stating that the ruby is of Burmese origin, with no indications of thermal treatment