RING In platinum, claw-set with an oval sapphire weighing approximately 6.80 cts, set in a swirl of round old-cut and baguette-cut diamonds. Hallmarked by the master. A diamond and platinum ring, set with an oval shaped sapphire weighing approximately 6.80 cts. C.G.L. certificate stating: origin Ceylon (Sri Lanka), natural colour, no heat modification. RC : Stone dimensions: 13.3 x 10.9 x 5.5 mm approx. TDD: 52 - 53; US: 6 - 6 1/2 (changeable). Gross weight: 17.4 g (Pt - 950).