Exhibition curator Caroline de Guitaut poses with the Cullinan III and IV brooch at the Queen's Gallery...
Exhibition curator Caroline de Guitaut poses with the Cullinan III and IV brooch at the Queen's Gallery in Buckingham Palace, London May 15, 2012. A special exhibition "Diamonds: A Jubilee Celebration" will run from June 30 - July 8 and July 31 - October 7, in celebration of Queen Elizabeth's Diamond Jubilee anniversary. REUTERS/Stefan Wermuth (BRITAIN - Tags: ENTERTAINMENT ROYALS SOCIETY)