I think Charlotte may be loaned a tiara, and possibly have one purchased for her, like Princess Margaret, because as her jewels are pasted down her family, the further, and further they move away from the monarchy. Jewels belonging to Camilla will also come into play due to the fact she has non royal children that should rightfully inherit her personal jewels. It will be the jewels from Charles that will be the issue. If he bought them for her, they could go to her children, if they belonged to QEQM, they should remain in the royal family. Quite the quagmire.