The first a heart shaped gem was a 5.04 carat fancy vivid blue heart modified brilliant cut diamond with VS2 clarity. The stone is mounted on a platinum ring flanked by two pear-shaped diamonds. It achieved more than $10.5 million USD, making it the top lot at the Sotheby’s auction.
The second was a 4.49 carat heart modified brilliant cut, internally flawless, fancy vivid pink diamond. It’s mounted on an 18k white gold ring flanked by pear shaped diamonds. It achieved more than $8.1 million USD. at the high end of its estimate, making it the number three lot of the sale.
The buyer or buyers for both lots is unknown at this time and there is no indication whether a single person purchased both fancy colored diamonds.
A 12.11 carat fancy intense blue diamond sold for $15.9 million USD at Christie’s Hong Kong Magnificent Jewels auction. The internally flawless marquise shaped, brilliant cut gem was sold during a long, drawn out bidding process that was gradually narrowed down to two phone bidders, as seen through the auction house’s live stream.
It blew past its $12.3 million high estimate with a hammer price of $13.6 million which doesn’t include the buyer’s premium. The price per carat was $1.31 million.
A fancy deep blue diamond ring with a high estimate of CHF 14 million will go under the hammer at Christie’s Geneva Magnificent Jewels auction next month.
The 7.03 carat stone, mounted by Moussaieff, will lead the November auction, Christie’s said Thursday. Another prominent lot is a 46.93 carat, D color, internally flawless diamond ring, which is expected to fetch CHF 3.8 million to 4.5 million.
Christie’s will also offer a 42.97 carat Burmese sapphire pendant, valued at up to CHF 3 million, and a pair of untreated Colombian emerald earrings, each weighing over 7.5 carats, with a presale estimate of CHF 1 million to 1.5 million.
Other items on offer include a rare Belle Époque brooch, dated circa 1910, which was procured by the Australian opera singer Dame Nellie Melba at the height of her career. The turquoise and diamond piece is valued at CHF 250,000 to CHF 350,000.
The sale also encompasses several Art Deco pieces from Cartier. Three brooches, formerly in the collection of Countess Béatrice of Granard OBE, have a high presale estimate of CHF 220,000. A diamond Cartier bandeau, which can also be worn as a choker, two bracelets and a brooch, is valued at up to CHF 500,000.
Highlights from the collection are available for viewing at Christie’s London on October 22 and 23, and at the Four Seasons Hotel des Bergues, Geneva, from November 7 to 12.