Lot 260. Natural pearl and diamond necklace. Estimate 27,000 — 40,000 CHF. Photo: Sotheby's.

Composed of a slightly graduated row of natural pearls measuring from approximately 5.75 to 8.70mm, the clasp set with a rose diamond, length approximately 370mm.

Accompanied by SSEF report no. 87527, stating that the forty pearls were found to be natural, saltwater.

Sotheby's. Magnificent Jewels and Noble Jewels, Geneva, 16 Nov 2016, 10:30 AM