Natural pearl and diamond hat pin, late 19th century - Photo Sotheby's

Set with a semi-baroque natural pearl measuring approximately 12.50 x 12.60 x 22.40mm, highlighted with circular-cut and rose diamonds, length approximately 107mm, French assay and partial maker's marks. Estimation: 70,000 - 120,000 CHF - Lot. Vendu 122,500 CHF

JEWELS FROM THE COLLECTION OF PRINCESS FRANCES ALICE PONIATOWSKA (1901-1989), NÉE WILLING LAWRANCE

Sotheby's. Magnificent Jewels. Genève | 14 nov. 2012 www.sothebys.com