An important diamond rivière necklace comprising a graduated line of fifty-one round brilliant-cut diamonds, weighing 7.19, 5.06, 5.00, 3.41, 3.40, 3.27, 3.25, 3.16, 3.12, 2.35, 2.27, 2.21, 2.02, 2.00, 1.70,1.65, 1.40, 1.30, 1.29, 1.28, 1.25, 1.12, 1.06,...