NEW YORK, NY.- A Tiffany & Co. Kashmir sapphire diamond platinum-topped gold ring could sell for $175,000+ to lead Heritage Auctions’ Fine Jewelry Signature® Auction April 29 in New York. The auction is a mosaic of unique creations spanning the Georgian era to the present day.

Jill Burgum, Heritage’s Senior Director of Fine Jewelry, said experienced jewelry connoisseurs can expect a robust selection of estate jewelry, rare colored gemstones, and name brand designs both contemporary and vintage.

“White and fancy colored diamonds from 2.00 to 11.00 carats also play an impressive role in the upcoming auction,” she said. “A highlighted lot is an 11.03 carat pear-shaped diamond accompanied by a GIA certificate stating I color, VS2 clarity and carries a pre-sale estimate of $150,000+.”

Colored gemstones captivate the eye with vibrant bursts of color and leading the auction’s extensive selection is a Columbian emerald and diamond ring by Kurt Wayne, accompanied by GIA and AGL certificates, valued at $150,000. A rare Emerald White Gold Necklace - featuring the 3.40 carat Heart of Carolina Emerald - is estimated to sell for $25,000+. The heart-shaped emerald is incredibly rare as North America is not known for producing emeralds – outside of one area, Hiddenite, N.C. The Heart of Carolina Emerald was discovered in 1998 and ranks as #13 on the list of largest emeralds ever mined in North America.

A Fancy Yellow Diamond, Diamond, Gold Ring, from the private collection of Toni Tennille of American recording artists Captain & Tennille and set with two yellow diamonds weighing a total of approximately 4.73 carats and enhanced by full-cut diamonds, could sell for $60,000+.

An extremely rare Archaeological Revival ‘Cave Pearl’ necklace by legendary goldsmith Carlo Giuliano, in its original fitted box, could sell for $40,000+. Fashioned from diminutive limestone deposits subjected to millennia of water dripping deep inside a cave, the 100+ year old necklace is the oldest piece in the auction. Another Victorian find, an exceptional Natural Pearl, Diamond, Ruby, Silver-Topped Gold Brooch, features a natural baroque pearl notable for its exceptional size, fine condition and natural origin. The brooch is enhanced by a second natural baroque pearl, which increases the pieces’ gross weight to an impressive 18.90 grams, could sell for $40,000+.

“Name brand designs by firms such as Cartier, Tiffany and Van Cleef & Arpels remain popular purchases among our clients and we expect some recent additions will bring added attention and increased bidding,” Burgum said. “I am excited to offer a single owner collection of Angela Cummings designs for Tiffany & Co., including an Opal, Black Onyx, Gold Bracelet, estimated at $9,000+; an iconic Jadeite Jade, Gold ‘Lotus Root’ Bracelet, estimated at $7,000+; and a Coral, Jasper, Gold Bracelet, which could sell for $9,000+.”