Queen Elizabeth II, wearing the 'Girls of Great Britain and Ireland' tiara and a fringe necklace of drop diamonds, at a state banquet during a state visit to Singapore, 10 October 1989. The necklace was a gift from King Khalid of Saudi Arabia, and the tiara - also known as 'Granny's Tiara' - was once owned by Queen Mary. (Photo by Tim Graham Photo Library via Getty Images)
