On 25 September, Sotheby’s New York is holding a sale of jewels, categorised as Important Jewels, a selection of signed and period estate jewels and white diamonds. Another selective group of period jewels will be on sale, of which most are Cartier designs. %% The total number of lots expected to be on sale is 450 lots, with a sale worth of $11-$15mn. %% Of the period collection, which is owned by a private collector, more than 40 lots will be opened in the second session for sale. The jewels mainly exhibit a design style of the 1940s and 40s and include - a Cartier designed rock crystal, tourmaline, and diamond clip/bangle combination from, circa 1935, with a sale tag of $15,000-$20,000, an emerald-cut Harry Winston diamond ring, circa 1962, set with a D color, VS1 clarity stone, weighing 7.59 carats, with a pre-sale tag of between $250,000-350,000, a Tiffany & Co designed diamond ring set with a D color, internally flawless, oval modified brilliant-cut diamond of 7.33 carats, and with two tapered baguette diamonds, mounted in platinum having a pre-auction sale worth of $625,000 to 675,000. %% The pre-sale exhibition opens on 20 September.