A magnificent blue sapphire and diamond ring by Cartier featuring a 21.71-carat Kashmir sapphire named The Kelly Sapphire
was the top lot at Christie’s New York sale of Important Jewels on June 16, selling for $4,197,000, more than double its pre-sale high estimate of $2 million.
The cushion-shaped sapphire, mounted in platinum and flanked on either side by a trapeze-shaped diamond, is said to be natural with no indications of heating. It was named for Margaret Adderley Kelly, who helped shape Kelly Services Inc. into a Fortune 500 company with her husband, William R. Kelly, and son Terence E. Adderley.
Another piece from Mrs. Kelly’s collection, an Art Deco diamond pendant necklace (right)
, was the third top lot, selling for $2,225,000, $225,000 above its pre-auction high estimate. The necklace, circa 1920, features a detachable pear-shaped diamond weighing approximately 16.24 carats with D color and internally flawless clarity. It is suspended from a platinum and old-mine-cut diamond neckchain.
The stone is a Type IIa diamond, 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 second top lot was an impressive diamond ring (left)
featuring a cushion-shaped diamond weighing approximately 80.73 carats mounted in platinum, which sold for $3,805,000.
Another fine blue sapphire and diamond ring fared well at the auction (below right)
, taking the fourth top lot at $1,145,000. The ring features a cushion-shaped sapphire weighing approximately 9.97 carats with an origin classified as Kashmir and no gemological evidence of heat treatment. The sapphire also possesses a high clarity and a very deep, richly saturated royal blue color, for which it was named The Majestic Blue
. It is mounted in platinum with circular-shaped diamond shoulders.
The fifth top lot was a ring set with a modified-cushion-shaped fancy intense yellow diamond weighing approximately 28.02 carats, flanked on either side by a shield-shaped diamond, mounted in platinum and yellow gold. It sold for $857,000.
A beautiful ruby and diamond necklace (below left)
took the sixth top lot, selling for $845,000, well above its pre-auction high estimate of $650,000. The necklace is designed as a graduated series of 18 oval-shaped rubies mounted in platinum and yellow gold, each within a halo of pear-shaped diamonds that appear as petals. A marquise-shaped diamond separates each “flower.” The origin of the rubies is classified as Burma (Myanmar), with no gemological evidence of heat treatment.
A third blue sapphire and diamond ring (below right)
took the seventh top lot, selling for $845,000, well above its pre-auction high estimate of $500,000. The ring features a rectangular-shaped sapphire weighing approximately 27.83 carats with an origin classified as Ceylon (Sri Lanka) and no gemological evidence of heat treatment. It is mounted in yellow gold and flanked on either side by a triangular-shaped diamond.
Rounding out the top 10 lots were three diamond rings. The first features a cushion-shaped diamond weighing approximately 25.82 carats set in a platinum and cushion-shaped diamond hoop. It sold for $725,000, $25,000 above its pre-auction high estimate. The next features a rectangular-shaped diamond weighing approximately 13.72 carats set in platinum and flanked on either side by a triangular-shaped diamond. It sold for $629,000, $29,000 above its pre-auction high estimate. The last features a square-shaped diamond weighing approximately 20.46 carats set in platinum and flanked on either side by a tapered baguette-cut diamond. The ring also features a circular-shaped diamond gallery, shoulders and half hoop. It sold for $605,000, $5,000 above its pre-auction high estimate.
All told, Christie’s New York sale of Important Jewels achieved a total of $27,584,875.