OVAL RING In platinum, centred on an old-cut diamond in a radiant setting of calibrated sapphires set off by small rose-cut diamonds. Circa 1900. A platinum and white gold wire ring set with blue stones. A diamond, sapphire and platinum ring. Circa 1900. We join a platinum,18k gold and blue stone ring. RC: TDD: 57; US: 8 1/4 and 45; US: 3 3/4 (subject to change). Gross weight: 8.5 g (Pt - 950 and 18k - 750).