Lot 470. Fine natural pearl and diamond necklace. Estimate 385,000 — 580,000 CHF (351,858 - 530,071 EUR). Photo: Sotheby's.

Composed of four rows of graduated natural pearls measuring from approximately 3.50 to 9.80mm, the clasp set with single-cut diamonds, shortest length approximately 475mm.

Accompanied by Gübelin report no. 15040256 and SSEF report no. 85831, stating that the three hundred and fifty-four pearls were found to be natural, saltwater; the Gübelin report additionally accompanied by an appendix letter.

Note: "It takes the careful sorting of tens of thousands of pearls before a strand of high quality natural pearls can be finally assembled. The pearls... are remarkable in their overall quality and are complemented by a pleasant cream body colour with pink overtone. Such an exceptional necklace of well matched natural pearls may be considered very rare". Excerpt from the Gübelin appendix letter. 

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