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

Set with a cushion-shaped ruby, weighing approximately 4.31 carats, to the cushion-shaped diamond surround, mounted in platinum and gold, ring size 7¼. Estimate CHF28,000 – CHF36,000 ($31,935 - $41,059)

Accompanied by report no. 11085153 dated 29 August 2011 from the Gübelin GemLab stating that the ruby is of Burmese origin, with no indications of heating, and two notes on Burmese rubies and large gem-quality rubies.

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