RING In white gold, set with a cushion-cut sapphire weighing 7.13 cts in a double surround of brilliant-cut diamonds. The ring is finely highlighted with small diamonds. TDD: 50 - 51; US: 5 1/2 - 5 3/4. A diamond and 18k gold ring set with an oval shaped sapphire weighing 7.13 cts. C.G.L. certificate stating: origin Sri Lanka (Ceylon), natural "Royal Blue" colour, no heat modification. RC : Stone dimensions: 11.38 x 9.31 x 7.45 mm. TDD: 50 - 51; US: 5 1/2 - 5 3/4 (not changeable). Gross weight: 11.6 g (18k - 750).