This tiara, which can also be worn as a necklace, was made for Queen Mary in 1919. It is not, as has sometimes been claimed, made with diamonds that once belonged to George III, but reuses diamonds taken from a necklace/tiara purchased by Queen Victoria from Collingwood &amp; Co. as a wedding present for Princess Mary in 1893. In August 1936, Mary gave the tiara to her daughter-in-law, Queen Elizabeth (later the Queen Mother). When Queen Elizabeth, consort of King George VI, first wore the tiara, Sir Henry Channon called it "an ugly spiked tiara". Later, she lent the piece to her daughter, Princess Elizabeth (future Elizabeth II), as "something borrowed" for her wedding to Prince Philip in 1947. As Princess Elizabeth was getting dressed at Buckingham Palace before leaving for Westminster Abbey, the tiara snapped. Luckily, the court jeweller was standing by in case of any emergency, and was rushed to his work room by a police escort. The Queen Mother reassured her daughter that it would be fixed in time, and it was. She lent it to her granddaughter, Princess Anne, for her wedding to Captain Mark Phillips in 1973. It was later loaned to Princess Beatrice for her wedding to Edoardo Mapelli Mozzi in 2020.