RING In two-tone gold, set with an emerald cabochon weighing 6.06 cts underlined by brilliant-cut diamonds, the shoulder set with navette-cut diamonds. A diamond and 18k gold ring set with a cabochon cut emerald weighing 6.06 cts. C.G.L. certificate stating: origin Colombia, impregnated with minor oil. RC : Stone dimensions: 12.12 x 10.58 x 5.64 mm. TDD: 55; US: 7 1/2 (changeable). Gross weight: 8.9 g (18k - 750).