RING In platinum, set with a beautiful octagonal-shaped emerald weighing 13.47 cts, in a surround of pear-cut diamonds. A diamond and 18k gold ring set with an octagonal shaped emerald weighing 13.47 cts. Bellerophon certificate attesting: Colombia origin, "Vivid Green" colour, minor oil impregnation. RC : Dimensions of the stone: 16.95 x 13.47 x 8.39 mm. TDD: 61 - 62; US: 9 3/4 - 10 (subject to change). Gross weight: 18.3 g (Pt - 950).