Chic estate and designer jewelry abounds in July 25 online auction

Rene Boivin Retro-style double clip pins in 18K gold, diamond and sapphire, estimated at $55,000-$66,000
NEW YORK – An 18K gold, diamond and sapphire double clip retro pin by Rene Boivin; an 18K white gold, diamond and enamel flower brooch by David Webb; and a diamond, sapphire and platinum engagement ring will likely earn top-lot status at Jasper52’s Exclusive Estate and Designer Jewelry auction, which will be conducted on Tuesday, July 25 starting at 8 pm Eastern time. Absentee and Internet live bidding will be available through LiveAuctioneers.