An Art Deco diamond necklace comprised of 58 collet-set round old European-cut diamonds, separated by half cylinder links of channel-set baguette-cut diamonds, in platinum. The necklace contains additional clasps and can be worn as a single 25.5" opera length necklace, or as a 16" or 17.5" rivière necklace and 7.25" long bracelet. Set with approximately 47.00 cts. tw diamonds, I-J color range, VS1-SI2 clarity range (center diamonds approximately 2.13 cts., 3.08 cts., and 2.30 cts., respectively). Weights estimated by formula; graded as mountings permit.