Lot 181. A three-stone coloured rectangular-cut diamond ring, by Bulgari. Estimate CHF800,000 – CHF1,000,000. Price realised CHF 2,629,000. Photo Christie's Image Ltd 2014

Set with three cut-cornered rectangular-cut coloured diamonds, a fancy vivid blue diamond, weighing approximately 2.03 carats, a fancy vivid purplish-pink diamond, weighing approximately 1.51 carat, and a fancy vivid yellow diamond, weighing approximately 1.47 carat, to the baguette-cut diamond surround and brillant-cut diamond shoulders, mounted in gold, ring size 6¾. Signed and with maker's mark for Bulgari. 

Accompanied by report no. 2155583017 dated 30 August 2013 from the GIA Gemological Institute of America stating that the 2.03 carat diamond is Fancy Vivid Blue colour, VVS2 clarity

Report no. 5151582828 dated 3 September 2013 from the GIA Gemological Institute of America stating that the 1.51 carat diamond is Fancy Vivid Purplish-Pink colour, SI1 clarity

Report no. 1152582717 dated 29 August 2013 from the GIA Gemological Institute of America stating that the 1.47 carat diamond is Fancy Vivid Yellow colour, VVS1 clarity

Christie's. GENEVA MAGNIFICENT JEWELS. 14 May 2014, Geneva