A diamond and platinum rivière necklace, French

Featuring forty round brilliant-cut diamonds, each prong-set, the primary diamonds weighing 5.51, 4.16, 4.01, 2.20, 2.20, 1.89, 1.77, 1.71 and 1.65 carats, the remainder tapering in size and weight to an estimated 0.75 carat; with 18k white gold elements; with French assay marks; estimated total diamond weight 53.50 carats; length: 15 1/2in.- Sold for $570,000 plus Premium and tax

Note: Top nine diamonds respectively accompanied by GIA Gem Trade Laboratory reports, dated June 25, 2007: #16192589 F color, VS1 clarity - #16192590 H color, VS1 clarity - #16192579 F color, VS2 clarity - #16192584 F color, VS1 clarity - #16192585 F color, VS1 clarity - #16192583 G color, VS2 clarity - #16192586 I color, VVS2 clarity - #16192582 G color, VS1 clarity - #16192587 G color, VS2 clarity

Bonhams. Fine Jewelry, 17 Dec 2007. Los Angeles, New York and San Francisco