The Imperial State Crown is set with 2,868 diamonds — including a piece of the Cullinan, the largest rough diamond ... Here's the queen mother wearing her crown in 1937. Queen Victoria wore ...

the crown also features a large diamond given to Queen Victoria by the Sultan of Turkey in 1856 in gratitude for British support during the Crimean War. The Queen Mother wore it without its arches ...

On 1 February 1850, the jewel was sealed in a small iron safe ... for presentation to Queen Victoria. Since then, Kohinoor has been a part of the jewels for the British crown ‘Escape the heat ...