Art Nouveau, Deco jewelry sparkles in Jasper52 auction Oct. 10

Art Nouveau

Antique 18K gold and platinum brooch set with a gem cat’s-eye, diamonds and rubies, circa 1890s. Estimate: $8,000-$10,000. Jasper52 image

NEW YORK – Bold and beautiful jewelry designs of the Art Nouveau and Art Deco eras are featured in a Jasper52 online auction that will be conducted Wednesday, Oct. 10. Antique gold and platinum rings, brooches, pendants and necklaces, many of them adorned with gemstones, comprise this glittering 87-lot auction. Absentee and Internet live bidding is available through LiveAuctioneers.

The auction will kick off with a unique piece – an 18K gold and platinum brooch in the form of a winged insect that is laden with diamonds, rubies, sapphires and a large cabochon cat’s-eye, a semi-transparent stone of the chrysoberyl family. The brooch weighs 11.3 grams and measures 1¼ inches high. This brooch is in excellent condition and traces its provenance to Margaret Elmendorf Sloan (1822-1913) of New York City by descent in the family to the last owner.

An excellent example of Art Nouveau is an 18K yellow gold portrait brooch (below) depicting a Gibson Girl wearing a choker composed of four old cut diamonds. This beauty is framed in a crescent moon with 24 pearls The brooch measures 1 1/8 inches from top to bottom.

Art Nouveau

Art Nouveau diamond, pearl and 18K gold portrait brooch,1 1/8in high x 1 1/8in wide. Estimate: $800-$1,000. Jasper52 image

A spectacular diamond and emerald ring in the auction is the essence of Art Deco. This beautiful ring in mint condition features a 1.03-carat center diamond, which is complemented by 48 additional diamonds for a total diamond weight of 2.63 carats and four rows of emeralds bordering the center of the ring. There is a beautiful handmade scroll design along the underside of the ring.

Art Nouveau

Art Deco diamonds and emeralds platinum ring, mint condition. Estimate: $6,000-$7,000. Jasper52 image

Ninety-seven brilliant diamonds totaling 3.5 carats adorn a 950 fine platinum brooch that is offered in the auction. Its three center diamonds are .40 carat each. The brooch measures nearly 2 inches long by about three-quarters of an inch high.

Art Nouveau

Art Deco platinum brooch set with 97 diamonds, 3.5 carats total. Estimate: $3,000-$3,500. Jasper52 image

A single accent diamond is set in the mouth of a finely modeled griffin that forms the central design of an 18K gold pendant brooch. Bearing French marks this piece is 1 5/8 inches high by 1 7/8 inches wide.

Art Nouveau

Rare antique 18K gold griffin pendant/brooch with a .20-carat diamond, French marks. Estimate: $2,500-$3,000. Jasper52 image

Two dozen sapphires surround a 1.4-carat old European cut diamond in a 995 platinum filigree gallery ring. The sapphires and the way the ring is set give it the appearance of a 2½-carat diamond. The gorgeous ring in excellent condition.

Art Nouveau

Vintage 1.4-carat old European cut diamond and sapphires platinum ring. Estimate: $7,000-$8,000. Jasper52 image

The Jasper52 auction of Art Nouveau and Art Deco fine jewelry will begin Wednesday, Oct. 10, at 7 p.m. Eastern Time.