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A photograph of the 45 carat Marlborough Diamond, set in a necklace, after the piece was stolen from the Graff Diamonds shop in London, 11th September 1980. Jewellery valued at a total of 1.5 million pounds was stolen in the raid. The Marlborough Diamond alone is worth 400,000 pounds. (Photo by Bride Lane Library/Popperfoto via Getty Images/Getty Images)

A photograph of the 45 carat Marlborough Diamond, set in a necklace, after the piece was stolen from the Graff Diamonds shop in London, 11th September 1980. Jewellery valued at a total of 1.5 million pounds was stolen in the raid. The Marlborough Diamond alone is worth 400,000 pounds. (Photo by Bride Lane Library/Popperfoto via Getty Images/Getty Images)