The Love Story of the Royal Family and Cartier, Told Through One Spectacular Pink Diamond

In May of last year, Queen Camilla and King Charles III made an appearance at a Buckingham Palace garden party, one of their first since the king announced his cancer diagnosis three months earlier. Perhaps to mark the emotional significance of the moment, the queen wore the Williamson brooch, a truly spectacular 23.6-carat pink diamond set in platinum, designed by Cartier in 1953. The brooch, which matched Camilla’s pink Anna Valentine coat dress and the king’s pink cummerbund, was