RING In white gold, set with an octagonal emerald and two pear-shaped emeralds, set with small diamonds. The ring is partially set with diamonds. A diamond, emerald and 18k gold ring. Certificate C. Dunaigre certificate of origin Zambia. RC: Minor to moderate oil impregnation. Total weight of the emeralds: approx. 4.54 cts. TDD: 53; US: 6 1/2 (changeable). Gross weight: 6.7 g (18k - 750).