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An impressive diamond ring, by Sabbadini. Photo: Christie's Images Ltd 2012

Set with a rectangular-cut diamond, weighing approximately 30.73 carats, to the tapered baguette-cut diamond shoulders, mounted in platinum. Signed Sabbadini  Estimate $1,300,000 - $1,800,000. Price Realized $1,650,500

With report 13794153 dated 6 November 2012 from the Gemological Institute of America stating that the diamond is H color, VS1 clarity

Christie's. Magnificent Jewels . 10 December 2012 New York, Rockefeller Plaz.a