Lot 363. Natural pearl necklace. Estimate 385,000 — 580,000 CHF (351,858 - 530,071EUR). Photo: Sotheby's.

Composed of four rows of graduated pearls measuring from approximately 4.55 to 9.05mm, the clasp set with a pearl within a mount of circular-, single-cut and cushion-shaped diamonds, shortest length approximately 765mm.

Accompanied by SSEF report no. 83353, stating that the five hundred and fifty-four pearls were found to be natural, saltwater. 

Sotheby's. Magnificent Jewels and Noble Jewels, Genève, 17 mai 2016, 10:00 AM