A FINE RUBY AND DIAMOND RING

Details
A FINE RUBY AND DIAMOND RING
Set with an oval-cut ruby weighing approximately 5.31 cts., flanked on each side by a fancy-cut diamond, mounted in platinum and 18K gold
With certificate 9803391 from the Gbelin Gemmological Laboratory stating that the ruby is of Burmese origin. No indications of thermal treatment.