A model wears pieces of jewellery from the new High Jewellery Collection “Sortilege de Cartier” on September 17, 2011 in Rome, Italy. (Photo by Pascal Le Segretain/Getty Images for Cartier)

Alessia Piovan wears pieces of jewellery from the new High Jewellery Collection “Sortilege de Cartier” at Villa Aurelia on September 17, 2011 in Rome, Italy. (Photo by Vittorio Zunino Celotto/Getty Images for Cartier)

Monica Bellucci arrives at the new High Jewellery Collection “Sortilege de Cartier” launch at Villa Aurelia on September 17, 2011 in Rome, Italy. (Photo by Vittorio Zunino Celotto/Getty Images for Cartier)

Fan Bingbing attends the new High Jewellery Collection “Sortilege de Cartier” launch dinner at Villa Aurelia on September 17, 2011 in Rome, Italy. (Photo by Pascal Le Segretain/Getty Images for Cartier)