Formerly in the collection of Diane Benvenuti, née Rothschild. Natural button-shaped pearl and Type IIa diamond brooch, first quarter 20th Century. Photo Sotheby's The button-shaped pearl measuring approximately 13.25 mm, flanked by two pear-shaped diamonds....

A pair of natural pearl, treated natural pearl and diamond earrings. Photo Christie's Image Ltd 2014 One centering upon a white natural button-shaped pearl, measuring approximately 18.6-18.6 mm, and one centering upon a dark grey treated natural button-shaped...

A delicate antique natural pearl and diamond brooch. Photo Christie's Image Ltd 2013 The base set with a natural button-shaped pearl, measuring approximately 13.2-13.4 x 8.5 mm, in an old-cut diamond surround, extending five diamond-set branches, each...

Platinum, Natural Pearl and Diamond Necklace. Photo Doyle New York The graduated necklace set continuously with 25 natural button-shaped and round pearls approximately 8.1 to 4.3 mm., and one freshwater natural pearl approximately 7.6 mm., encircled and...