1950's Platinum 62.40 Ct. Diamond Necklace

1950's Platinum 62.40 Ct. Diamond Necklace Weighing 45.2 grams Set with a GIA Certified 4.80 Ct. Diamond in Center M Color, VS1 Clarity GIA # 5221665016 Along with 21 European-cut Diamonds weighing app. 19.60 Ct. 81 Fancy-cut Diamonds weighing app. 16.00 Ct. 92 Old-Mine Diamonds weighing app. 22.00 Ct. G-I Color, VS1-SI2 Clarity 16.5 inches in length