A single-strand natural pearl and diamond necklace. Estimate CHF115,000 – CHF165,000 ($121,023 - $173,642). Photo Christie's Image Ltd 2015.

Composed of seventy-three graduated natural pearls, measuring approximately 8.6 to 5.2 mm, to the diamond-set foliate clasp, mounted in gold, 49.0 cm 

Accompanied by report no. 78303 dated 2 February 2015 from the SSEF Swiss Gemmological Institute stating that the 73 pearls are natural saltwater pearls 

Christie's. GENEVA MAGNIFICENT JEWELS, 13 May 2015, Geneva