The largest vivid-green diamond ever to appear at auction is one of the rare natural-colored diamonds and historical jewels being sold at the Sotheby's November 17 sale
at the Hotel Beau Rivage in Geneva. A total of around 400 lots are set to be auctioned off and could bring close to $30 million. The green diamond, shown above at right, is a cushion-shaped stone with a modified brilliant cut. It weighs 2.52 carats but because of the rarity of natural diamonds of this color it is estimated to sell for $3.1 million to $5.1 million. Shown above at left is another expensive rare stone, a pear-shaped fancy vivid-blue diamond with a modified brilliant cut. it weighs 5.96 carats and is expected to fetch between $5.5 million to $7.5 million. Other gorgeous colorful diamonds up for sale include a cushion-shaped fancy pink diamond weighing 6.63 carats and a a cut-cornered rectangular-shaped fancy vivid-yellow diamond with a modified brilliant cut, weighing 74.8 carats and mounted on a yellow gold ring.
The sale also includes pieces from the collections of Mary, Duchess of Roxburghe, Grand Duchess Maria Pavlovna of Russia and society figure Daisy Fellowes. Many pieces signed by Boucheron, Bulgari, Cartier, Harry Winston, Tiffany and Co., and Van Cleef and Arpels, and other jewelry houses past and present will be up for sale. A sapphire and diamond demi-parure, circa 1900, was inherited from Grand Duchess Maria Pavlovna by her daughter Princess Elena of Greece and Denmark, Grand Duchess of Russia, and has been consigned by its present owner, a member of a European imperial family. The set is estimated to sell for $137,000 and $176,000. The group of jewels--which left Russia just before Pavlovna's flight from St. Petersburg during the 1915 Revolution--includes a brooch set with an oval Burmese sapphire within a border of cushion-shaped diamonds, and a pair of matching ear clips.
Speaking of the sale, David Bennett, Sotheby's Chairman of Jewelry, Europe and Middle East, said: "We are thrilled that we are able to follow on from our achievement of the world record price per carat for any gemstone at auction with the "Star of Josephine" this past May in Geneva by offering a magnificent Fancy Vivid Blue Diamond of 5.96 carats, as well as an extremely rare vivid green diamond – the largest to ever appear at auction."
[via National Jeweler