An aquamarine and diamond necklace, the pear cut aquamarine claw set below a marquise cut diamond, estimated to weigh 0.30 carats, suspended below a marquise cut aquamarine and a pear cut diamond, estimated to weigh 0.25 carats, on a belcher link chain set with brilliant cut diamonds in circular settings, approximately 0.16 carats total, stamped 750 with Italian control marks, 42.5cm long