Ring in 750 thousandths yellow gold, set with an oval-cut yellow sapphire, approx. 2.70 ct, in a setting of eighty princess-cut diamonds (shock to one diamond), the bezel decorated with tiers. Circa 1990. M. O. (partial): Ostrich. G. In an oval. Sapphire size: 9.1 x 7 x 5.5 mm Estimated total diamond weight: 0.80 ct Finger: 53.5 - Gross weight: 12.8 g