Emerald, diamond, platinum, 18k yellow gold necklace. Photo courtesy Michaan's Auctions

Gross Weight: 64.3 dwts. Featuring one round-cut emerald weighing approximately 25.00 cts., flanked by fifty-six marquise-cut diamonds weighing a total of approximately 14.75 cttw., further enhanced by one hundred and twenty-eight full-cut diamonds weighing a total of approximately 24.50 cttw., set in an articulated platinum and 18k yellow gold linked mounting, completed by a pressure lock, tongue and groove clasp, forming a 16 1/2 inch necklace. Sold for $141,600

Michaan's Auctions. Fine Art, Furniture, Decorative Arts and Jewelry Auction. Friday, June 7, 2013. http://www.michaans.com