Tank ring in 750 thousandths pink gold, designed with scrolls evoking the Ionic order, centered on a round-cut pink tourmaline weighing nearly 1 ct (reported) on 850 thousandths platinum claws (tightening ring). Circa 1950. Tourmaline size: 6.5 - 6.5 x 4.2 mm Finger: 49 - Gross weight: 13.4 g