LONDON, ENGLAND - FEBRUARY 26: A member of Sotheby's staff holds a diamond brooch given to the Duchess by her husband Andrew Cavendish, 11th Duke of Devonshire to mark their diamond wedding anniversary in 2001 during a behind the scenes look at the personal collection of Deborah Cavendish, Duchess of Devonshire ahead of Sotheby's exhibition and sale on February 26, 2016 in London, England. The exhibition opens to the public on Saturday 27th February and the sale takes places on March 2nd 2016. (Photo by Miles Willis/Getty Images for Sotheby's)
