Impressive and rare natural pearl and diamond necklace. Photo Sotheby's.

Designed as a graduated single row of natural pearls measuring from approximately 9.55 to 15.40mm, the clasp collet-set with a marquise-shaped diamond, length approximately 430mm. Estimation 230,000 - 410,000 CHF

Accompanied by SSEF report no. 69430, stating that thirty pearls were found to be natural, saltwater, and that one was found to be natural, freshwater.