Platinum Diamond Tennis Necklace 51.08 Ct. Weghing 63.9 grams Set with a GIA Certified Center Diamond Weighing 3.42 Cts. K Color, VS1 Clarity GIA #2191005949 Along with a 1.51 Ct. European cut Diamond J Color, VS2 Clarity GIA #5182872307 And 45 European Cut Diamonds weighing 46.15 Cts. All H-J Color VVS1-VS2 Clarity Platinum Weight: 63.90 gm.