The crown the monarch exchanges for St Edward's crown at the end of the coronation ceremony. Includes, from top to bottom: St Edward's Sapphire (from Edward the Confessor’s ring); Queen Elizabeth I's Earrings (four pearls under the arch, two may date from 1533); The Black Prince's Ruby (a spinel given to Edward, Prince of Wales in 1367); Cullinan II Diamond, or Second Star of Africa (317.40 ct, from the largest diamond ever found, 1905); The Stuart Sapphire (on reverse, passed through the Stuart line from James II in 1688). http://www.hrp.org.uk/TowerOfLondon/stories/crownjewels.aspx