Posted on September 16, 2014 by

9.75 Carat Vivid Blue Diamond to Hit Sotheby’s Auction Block on November 20

9.75 carat pear-shaped Fancy Vivid Blue diamond

A 9.75 carat VVS2, possibly Internally Flawless, pear-shaped Fancy Vivid Blue diamond will serve as the highlight of a Sotheby’s New York auction scheduled for November 20. The remarkable diamond, along with a 9.15 carat pear-shaped fancy blue diamond, belonged to the late Rachel “Bunny” Lambert Mellon, a horticulturist, philanthropist and art collector, who died in March at 103. The 9.75 carat Fancy Vivid Blue diamond, which carries a GIA report and is set in platinum, is expected to fetch $10 million to $15 million. The slightly smaller 9.15 carat fancy blue diamond has a presale estimate of $1 million to $1.5 million. Both blue diamonds are entirely natural.


9.75 Carat Fancy Vivid Blue Diamond in Sotheby’s New York Auction


9.75 carat pear-shaped Fancy Vivid Blue diamond to be auctioned by Sotheby's New York in November 2014.

This 9.75 carat pear-shaped Fancy Vivid Blue diamond is set to be auctioned by Sotheby’s on November 20, 2014.

Mellon was the second wife, and eventual widow, of Paul Mellon, himself a philanthropist, and horse breeder. During her career, she planned and brought to life several important gardens, including the White House Rose Garden.


Love the color, but not the price tag? Check out Diamond Envy’s selection of rare, natural blue diamonds. Plus, visit our expert study to learn more about the investment value of rare colored diamonds and our blue diamond guide for the details of origin, price and history of these unique jewels.

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14 Responses to 9.75 Carat Vivid Blue Diamond to Hit Sotheby’s Auction Block on November 20

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