A pair of natural pearl, treated natural pearl and diamond earrings. Photo Christie's Image Ltd 2014

One centering upon a white natural button-shaped pearl, measuring approximately 18.6-18.6 mm, and one centering upon a dark grey treated natural button-shaped pearl, measuring approximately 18.8-19.1 mm, each with a marquise-shaped diamond half-surround, mounted in gold, 3.8 cm. Estimate CHF72,000 – CHF110,000 ($82,341 - $125,799)

Accompanied by report no. 72932 dated 4 March 2014 from the SSEF Swiss Gemmological Institute stating that the white pearl is a natural saltwater pearl, and that the dark grey pearl is a treated natural saltwater pearl with indications of artificial colour modification

A PASSION FOR JEWELS
The Collection of a European Gentleman.

Christie's. GENEVA MAGNIFICENT JEWELS. 14 May 2014, Geneva - http://www.christies.com/