A diamond brooch, by Cartier. Photo Christie's Image Ltd 2013

Designed as a circular-cut diamond plaque with baguette-cut diamond detail, extending a circular and baguette-cut diamond spray, mounted in platinum, with French assay marks Signed Cartier, no. 21316. Estimate $10,000 – $15,000

Christie's. NEW YORK MAGNIFICENT JEWELS AND THE PRINCIE DIAMOND16 April 2013. New York, Rockefeller Plaza.