Ring in 750 thousandths white gold set with an oval-cut sapphire weighing approx. 4 ct (minor chips), shouldered by two trapeze-cut diamonds. Marked by French master goldsmith Jules BOSMAN, registered in 1958. Sapphire size: 12 x 9.2 x 5 mm Estimated total diamond weight: 1.10 ct Finger: 50 - Gross weight: 13.3 g Sapphire certified by the GemParis laboratory as being of Sri Lankan (formerly Ceylon) origin and unheated (S1).