An opal, diamond and 9ct gold necklace, eleven graduated shallow cabochon white crystal opals (27 x 18.7 x 5.2 mm-13.5 x 9.8 x 4.0 mm) with ten small brilliant cut diamonds. Opal ranging 3.0-14.0 ct. Estimated total weight of 10 diamonds: 0.20ct. Weight 41.2g.