NEW YORK — A vintage David Webb ring, a Hemmerle brooch and a retro gold geometric bracelet lead the 300-lot Exclusive Estate and Designer Jewelry auction at Jasper52 on Tuesday, Aug. 22. Bidding is available exclusively at

The 1970s-era David Webb ring features a 1.50-carat oval brilliant-cut diamond accented with rubies and diamonds set in 18K gold. It carries an estimate of $25,000-$30,000.

A gorgeous Hemmerle ruby, emerald and 18K gold brooch is designed with its leaves and its stem carrying invisibly set French-cut rubies. Each leaf features a pear-shape emerald in the center. The brooch is estimated at $34,000-$41,000.

Designed in a geometric style, a wide and shiny retro bracelet made of 18K yellow, white and rose gold, is comprised of the gold square pyramids connected by invisible hinges. It is estimated at $14,000-$17,000.

Click here now to register for Jasper52’s Exclusive Estate and Designer Jewelry event held exclusively at LiveAuctioneers on Tuesday, August 22 at 8 pm Eastern time.