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April 24, 2017
The 34.40-carat Stotesbury Emerald, a six-sided gem with a famed history that spans more than 100 years, headlines a cavalcade of magnificent jewels at Sotheby's New York on Tuesday.
The Colombian-mined emerald was previously in the collections of three high-profile American jewelry collectors: Evalyn Walsh McLean (1908), Eva Stotesbury (1926) and May Bonfils Stanton (1947).
The Stotesbury Emerald was last seen in the public in 1971. At the time, it had been set into a platinum ring by Harry Winston and was being offered for sale at auction. Tomorrow, Sotheby's will be showing the ring in that same Harry Winston setting — a unique design that buttresses the emerald with two rows of pear-shaped diamonds. The estimated selling price is $800,000 to $1.2 million.
The lot with the highest estimated selling price is a pair of platinum earrings featuring D-flawless square emerald-cut diamonds, each weighing slightly more than 20 carats. Estimated to sell for $4.5 million to $5.5 million, the earrings are topped by two smaller square emerald-cut diamonds weighing 1.01 carats each.
Another notable piece is a platinum ring set with an extraordinarily rare 1.64-carat fancy vivid green diamond flanked by two cut-cornered triangle-shaped white diamonds. While fancy-color diamonds are seen in a wide range of hues, red and green are the rarest of all. Green diamonds get their color when radiation displaces carbon atoms from their normal positions in the crystal structure. This can happen naturally when diamond deposits lie near radioactive rocks, according to the Gemological Institute of America. Sotheby's expects the ring to sell in the range of $1 million to $1.5 million.
A sapphire-and-diamond brooch dating back to the 1930s is expected to get a lot of attention at Sotheby's sale due to its unique pedigree. The Art Deco piece by Cartier was formerly in the collection of Mrs. John E. Rovensky, who had been previously married to railroad tycoon Morton F. Plant.
Plant famously traded his corner lot on Fifth Avenue for two strands of Cartier natural pearls in 1917. The pearls were said to be valued at $1 million. That location at Fifth Avenue and 52nd Street remains the New York headquarters for the jeweler. The brooch, which is set with two emerald-cut sapphires weighing approximately 10.40 and 7.75 carats, has a floral motif interpreted in round, baguette, old European-cut, pear and marquise-shaped diamonds weighing approximately 13.95 carats. The piece is expected to fetch between $200,000 and $300,000.
Credits: Images courtesy of Sotheby's.