A Diamond Brooch, by David Webb. Photo: Christie's Images Ltd 2013.

Designed as a circular and old European-cut diamond openwork plaque, mounted in 18k gold and platinum, with pendant hook and hoop for suspension, circa 1965, in a David Webb black suede case. Signed Webb for David Webb. Estimate:  $25,000 – $35,000

THE ESTATE OF THE HONORABLE NOREEN STONOR DREXEL, NEWPORT, RHODE ISLAND 

Christie's. MAGNIFICENT JEWELS. 15 October 2013. New York, Rockefeller Plaza.