PRETTY RING In white gold, set in the centre with a cushion-shaped sapphire weighing 2.90 cts, in a surround of round and baguette diamonds. A diamond and 18k gold ring set with a cushion-shaped sapphire weighing 2.90 cts. A.G.T.L. certificate stating: Ceylon (Sri Lanka) origin, natural colour, no heat modification. RC : Stone dimensions: 8.93 x 7.59 x 5.12 mm. Stone weight (engraved): 2.90 cts. TDD: 53 - 54; US: 6 3/4 (changeable). Gross weight: 3.7 g (18k - 750)