PLATINUM AND DIAMOND RIVIÈRE NECKLACE, Van Cleef & Arpels

featuring 40 old European-, transitional-, and old mine-cut diamonds; the largest four diamonds are old European-cut weighing approx. 4.25, 2.76, 2.47, and 2.33 cts.; the smallest diamond weighing approx. 0.70 cts.; approx. 63 tcw.; signed with hallm