From a noble family. Natural pearl and diamond necklace, circa 1925. Estimate 43,000 — 54,000 CHF. Photo Sotheby's

Composed of a graduated strand of roundish to oval, button and barrel shaped natural pearls measuring from approximately 6.35 to 10.40mm, alternating with seed pearls, the clasp decorated with three circular-cut diamonds, encircled by single-cut stones, length approximately 515mm, French assay and partial maker's marks.

Accompanied by SSEF report no. 78448, stating that the forty-two pearls were found to be natural, saltwater, and four are natural, freshwater.

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