I know there has been some speculation as to whether Her Majesty will wear the same crown as the King's grandmother did, including the Koh-i-Noor diamond. My personal view (for which, of course, no one has or would ask!) is that it would be in the best interest of TM and the monarchy not to allow their coronation be embroiled in the issue of the diamond's rightful ownership and of colonialism writ large.