A cultured pearl, aquamarine and diamond necklace, the graduated strand of cultured pearls, measuring from approximately 8.12 to 9.92 mm, centring an oval-shaped aquamarine, measuring approximately 19.84 x 15.85 x 12.40 mm, enhanced by a round brilliant-cut diamond surround, signed white, estimated total diamond weight 2.30 cts, mounted in 18ct gold, length 440 mm