A natural pearl and diamond ring. Photo Christie's Image Ltd 2014.

Centering two button-shaped natural pearls, weighing approximately 25.28 and 24.48 grains, to the old-cut diamond surround and shoulders, mounted in platinum, ring size 6. Estimate CHF9,000 – CHF14,000 ($10,265 - $15,968)

Accompanied by report no. 06817 dated 05 December 2012 from the GPL Gem & Pearl Laboratory (London) stating that both pearls are natural saltwater pearls

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