LONDON, ENGLAND - JUNE 05:  An antique sapphire and diamond tiara circa 1850 with an estimate value  of £20,000-£30,000 GBP and a necklace estimated to be worth £10,000-£15,000 GBP circa 1850 are displayed on June 5, 2009 in London, England.   The Tiara and necklace are being offered for sale for the first time in 30 years having last been sold as part of the Barberini Jewels along with a pair of ear pendants and a brooch at Christie�s Geneva in 1971. The Barberini Jewels will be sold as four lots at Christie's Jewels: The London Sale will take place on June 10 and will feature vintage jewels and diamonds spanning the late 18th century through to the 20 century.   (Photo by Marco Secchi/Getty Images)