Natural pearl and diamond brooch, early 20th century. Estimate 78,000 — 118,000 CHF. Photo: Sotheby's.

Of scroll design, set with circular-cut diamonds around a button shaped natural pearl measuring approximately 13.77 x 14.52 x 12.32mm, suspending a detachable oval natural pearl measuring approximately 9.45 x 9.80 x 13.90mm..

Accompanied by SSEF report no. 80042, stating that the pearls were found to be natural, saltwater.

Sotheby's. Magnificent Jewels and Noble Jewels, Genève, 12 mai 2015, 10:30 AM