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

Set with a heart-shaped diamond, weighing approximately 3.02 carats, flanked on either side by fancy intense pink heart-shaped diamonds, weighing approximately 0.47 and 0.41 carat, to the micro pavé-set diamond hoop, mounted in gold, ring size 6. Estimate CHF140,000 – CHF180,000 ($160,338 - $206,149)

Accompanied by report no. 6157223574 dated 26 January 2013 from the GIA Gemological Institute of America stating that the 3.02 carat diamond is D colour, Internally Flawless clarity

Report no. 5151055500 dated 2 November 2012 from the GIA Gemological Institute of America stating that the 0.47 carat diamond is Fancy Intense Pink colour, VS2 clarity

Report no. 2145097148 dated 19 December 2011 from the GIA Gemological Institute of America stating that the 0.41 carat diamond is Fancy Intense Pink colour, SI2 clarity

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