Estimated to draw in $15,000 to $20,000 are Boucheron’s platinum, natural pearl, and diamond ear clips. Photo courtesy Sotheby’s.

A private collector contributed this 18 karat white gold, sapphire, and diamond Chanel ring to the sale. Its round and baguette diamonds weigh approximately 2.65 carats. Photo courtesy Sotheby’s.

BY KAREN AANONSEN

Important Jewels is an apt name for the collection hitting Sotheby’s auction block in New York on September 23, 2014. Among the 428 lots are show-stopping baubles from Boucheron, Chanel, Graff, and more. French house Van Cleef & Arpels alone is represented by 18 pieces, including a bracelet bedecked in approximately 36.75 carats of round diamonds and 17.75 carats of round sapphires that’s expected to fetch upwards of $110,000. Leading up to the sale, Sotheby’s’ curated mix of modern classics and exquisite period jewels is on display in New York, starting September 19, 2014.

—Sept. 20, 2014