A natural pearl and diamond ring. Photo courtesy Bonhams.

set with a natural white button pearl, measuring approximately 9.92mm., within a single-cut diamond surround; mounted in platinum; size 7 3/4. Estimate US$ 3,000 - 5,000 (€2,200 - 3,700)

Accompanied by GIA report #1162003470, dated April 2, 2014, stating: natural saltwater pearl, no indications of treatment.

Bonhams. FINE JEWELLERY, New York, 17 Jun 2014 11:00 - http://www.bonhams.com/