Christie’s New York: Colorless Diamonds in Rectangular Cuts Sparkle Brightest
An impressive diamond pendant necklace was the top lot at Christie’s New York auction of Important Jewels on Oct. 22, selling for $4,981,000 to an anonymous buyer.

The necklace suspends a platinum-mounted cushion-cut diamond totaling approximately 101.36 carats with L color, VS2 clarity and “Excellent” polish and symmetry from a black silk cord with pavé-set diamond terminals.

The second top lot was a magnificent diamond pendant necklace suspending a detachable pendant, which sold for $3,189,000 to the U.S. trade. The pendant is set with three rectangular-cut diamonds, the largest of which totals approximately 81.38 carats with a faint brown color and VVS1 clarity. The diamond is considered to be Type IIa, a rare subgroup of diamonds that includes less than 2 percent of the world’s diamond production. Stones in this group are chemically the purest of all diamond crystals and often have extraordinary optical transparency. The other two diamonds total approximately 15.30 carats and 7.04 carats, respectively, with L color and VVS2 clarity. All three diamonds are spaced by circular-cut diamonds. The necklace itself contains 17 circular-cut diamonds, the largest of which totals approximately 15.46 carats with K color and VS1 clarity, spaced by rectangular- and square-cut diamonds mounted in 18-karat white gold.

Rounding out the top three lots was a platinum ring set with a rectangular-cut diamond totaling approximately 23.89 carats with H color and potentially internally flawless clarity, flanked on either side by a tapered baguette-cut diamond, which sold for $1,565,000 to a private Asian buyer, well above its pre-auction high estimate of $1,200,000.

Additional top lots included a platinum ring containing a rectangular-cut Type IIa diamond totaling approximately 16.07 carats with F color and VVS1 clarity, set within a circular-cut and pear-shaped diamond surround, which sold for $1,505,000 to the international trade, well above its pre-auction high estimate of $1,200,000; a yellow gold ring set with a rectangular-cut diamond totaling approximately 16.99 carats with G color and VVS2 clarity, flanked on either side by a tapered baguette-cut diamond, which sold for $1,133,000 to the international trade, well above its pre-auction high estimate of $1,000,000; and a platinum ring by Cartier set with a cut-cornered rectangular-cut diamond totaling approximately 15.08 carats with F color and VVS2 clarity, flanked on either side by a tapered baguette-cut diamond, which sold for $1,109,000 to the Asian trade, well above its pre-auction high estimate of $700,000.

Another impressive sale was a sapphire and diamond ring by Tiffany & Co., which sold for $587,000 to the U.S. trade, well above its pre-auction high estimate of $150,000. The ring is set with a rectangular-cut Ceylon sapphire totaling approximately 63.65 carats, flanked on either side by a half-moon-shaped diamond, mounted in platinum.

Also impressive was the sale of an Art Deco Fishbowl Clock by Black, Starr & Frost, circa 1925, which sold for $137,000, well above its pre-auction high estimate of $20,000. Of mechanical Swiss movement, the circular clock features a dial of swimming carp brought to life with inlaid multicolored mother-of-pearl and hard stone, along with fish-shaped hands detailed with rose-cut diamonds. The clock is set into a rock crystal bowl enhanced with mother-of-pearl, coral and jade flowers, which is set atop a black onyx base trimmed with a floral motif realized in inlaid multicolored mother-of-pearl, hard stone and gemstones.

“Fine-quality colorless diamonds achieved strong prices with international bidding,” said Rahul Kadakia, International Head of Christie’s Jewelry. “Collectors also bid competitively for natural pearls and special jeweled objects such as the Art Deco Fishbowl Clock by Black, Starr & Frost. We look forward to continuing our season in Geneva on Nov. 11, where our Magnificent Jewels auction will offer for sale the Blue Belle of Asia sapphire weighing 392 carats.”

Christie’s New York sale of Important Jewels achieved a total of $33,719,500, selling 75 percent by lot and 77 percent by value. Overall, 260 of the 347 lots offered were sold.
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