Art Deco 11.96 Carat Ceylon Cabochon Sapphire & Diamond Ring, circa 1935A fine and important vintage sapphire and diamond ring. The sapphire in the centre certified as natural, unheated and originating from Ceylon (Sri Lanka) weighs an impressive 11. 96 carat and displays a distinct colour change: blue in daylight, purple in incandescent light. The stone is rubover set in platinum and surrounded by 39 eight cut diamonds. Decorative scroll work in the gallery leads to a slender platinum shank. Currently size M 1 2 (UK) or