Christie's Geneva Magnificent Jewels sale taking place tomorrow (Nov. 12) features a stunning collection of colored and colorless diamonds, led by a 7.03-carat, Fancy deep blue rectangular-cut diamond by London high jewelry house, Moussaieff. The VVS2 blue stone carries an estimate of $10,000,000 - $14,000,000.
Other noteworthy top diamonds include a cushion step-cut diamond of 46.93 carats set in a platinum ring with two half-moon modified brilliant-cut diamonds of 3.64 and 3.35 carats. The GIA graded the 46.93-carat center stone as D color, Internally Flawless clarity, type IIa. The ring has a estemated price of $3.8 million - $4.5 million. Another blue stone, a fancy intense blue weighing 5.23 carats, is cut-cornered rectangular modified brilliant-cut diamond with an estimate of $3.5 - $4.5 million. Two more colorless diamonds are also of note: a 23-carat D-Flawless type IIa oval brilliant-cut stone by Mouawad (est. $2.2 - $3.2 million) and a 25.3-carat D-color diamond of VVS2 clarity (originally graded Internally Flawless in 1969) by Harry Winston, estimated at $1.8 - $2.2 million.
The sale at the Four Seasons Hotel des Bergues will also feature a number of exceptional sapphires including a 42.97-carat Burmese sapphire pendant (estimate: $2 million - $3 million) and a 12.65-carat no-heat cushion-shaped Kashmir sapphire mounted on a platinum ring surrounded by pear-shaped diamonds by Cartier (estimate: $700,000 - $1 million), notes Anthony DeMarco for Forbes magazine. The sale of the 257 lots also offers a number of signed jewels and historically important pieces. In addition to the sapphire and diamond ring, there are 22 other jewels by Cartier including several transformable Art Deco pieces