The Koh-i-Noor diamond controversy at King Charles and Queen Camilla's coronation.

Camilla, the Queen Consort, will wear a modified version of the Queen Mary's Crown during King Charles III's coronation, with the replica of the Koh-i-Noor diamond removed due to its controversial history. The decision to not commission a new crown was made in the interests of sustainability and efficiency. Instead, Camilla's crown will feature the Cullinan III, IV and V diamonds, which are also not without controversy. The Cullinan diamonds will return to a display at the Tower of London after the coronation, while the Koh-i-Noor diamond will be on public display in a new exhibition at the Tower of London.