Most of us have heard of the story that Queen Mary gave Queen Elizabeth II this tiara for her wedding. It was giving to her in two pieces (the bandeau separate from the tiara). It was said that Queen Elizabeth didn't know that they went together and I believe her. In QD, it shows that Queen Mary loved to rework old jewellry to make new ones. In the third picture it shows the County of Surrey tiara with the Bandeau that belongs to the Girls of Great Britain Tiara. I wonder what else she did with it.