Christie's, UAE, April 2010

Lot 79 An Unusual Sapphire, Diamond and Emerald Ring, By Manuel Bouvier

The cushion-shaped sapphire weighing 65.17 carats to the pear-shaped diamond shoulders weighing a total of 2.87 carats within a pavé-set emerald surround to the similarly set gallery and bifurcated hoop, ring size 6¾, stamped "750"

With maker's mark for Manuel Bouvier
Accompanied by report no. GRS2008-091669 dated 13 September 2008 from the GRS Gem Research Swiss Lab stating that the sapphire is Burmese (Mogok, Pain Pyit) origin, no indication of thermal treatment