Christie's Fine Wine, Jewels and Watches Auction Preview

GENEVA - NOVEMBER 12: The Portland antique sapphire, diamond and natural pearl tiara, estimated to be worth USD380'000-450'000, is modelled by a Christie's employee during Christie's Fine Wine, Jewels and Watches auction preview at Hotel des Bergues on November 12, 2010 in Geneva, Switzerland. The sale will take place in London in December. (Photo by The Image Gate/Getty Images)