18ct two-tone gold Diamond Necklace with Opera length chain, set with brilliant and briolette cut diamonds. Designed and handcrafted by Robert Pearce, Fellow of the prestigious Gold & Silversmiths Guild of Australia. — 21 = 1.29ct EF VS brilliant cut natural diamonds, 3 = 0.28ct G VS Briollette natural diamonds, 18ct YG/WG Opera length chain.