Lot 641. Very fine natural pearl and diamond necklace, Chaumet. Estimate  250,000 – 370,000 CHF. Lot sold 1,145,000 CHF. Courtesy Sothebys

Designed as three rows of graduated natural pearls measuring from approximately 4.6 to 9.9mm, the geometric clasp pavé-set with carré- and single-cut diamonds, length of shortest row approximately 420mm, clasp detaches to allow pearls to be worn as a single or double strand, signed Chaumet, French assay and maker’s marks. 

Accompanied by SSEF report no. 68171, stating that the pearls were found to be natural, saltwater.