Princess Grace of Monaco at a reception in Philadelphia wearing a Cartier necklace in platinum and diamonds that she received as a wedding gift in 1956. The necklace was recreated by Cartier for the 2014 film Grace of Monaco starring Nicole Kidman. (Photo

Princess Grace of Monaco at a reception in Philadelphia wearing a Cartier necklace in platinum and diamonds that she received as a wedding gift in 1956. The necklace was recreated by Cartier for the 2014 film Grace of Monaco starring Nicole Kidman. (Photo credits:© Time Magazine / Getty)

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