An important coloured diamond and diamond ring by Nsouli. Photo: Christie's Images Ltd., 2010

The square-shaped Fancy Vivid Yellow diamond weighing 13.29 carats to the pavé-set yellow diamond gallery mounted with two pear-shaped diamonds, with pavé-set diamond bifurcated shoulders mounted with two yellow tinted pear-shaped diamonds, ring size 6¼. Estimate $280,000 - $350,000. Price Realized $338,500

Accompanied by report no. 2105501281 from the Gemological Institute of America stating that the diamond weighing 13.29 carats is natural, Fancy Vivid Yellow, SI2 clarity

Christie's. Jewels and Watches : The Dubai Sale Including The Fabulous Parures: An Important Private Collection, 27 October 2010, Dubai www.christies.com