Aquamarine and Diamond necklace from the Caterfoil – Monsoon collection, crafted in 18ct white gold. Inspired by the lighting skies in the tropical monsoon season, by Robert Pearce. — 1 = 0.49ct natural Aquamarine 20 = 0.71ct G VS natural diamonds, 18ct gold, Weighing: 1.9 grams, Measurement: 22mm across.