LONDON - MAY 15: The Cullinan III and IV Brooch (C) and Cullinan VII Delhi Durbar Necklace and Cullinan Pendant are displayed ahead of the 'Diamonds: A Jubilee Celebration' exhibition at Buckingham Palace on May 15, 2012 in London, England. The jewellery is made from the Cullinan Diamond, the largest diamond ever found. (Photo by Samir Hussein/WireImage)
