Imperial State Crown

Imperial State Crown
Hand-coloured photograph, published in 1919, digitally altered to resemble the crown's current shorter appearance
Details
Country	United Kingdom
Made	1937
Owner	King Charles III in right of the Crown[1]
Weight	1.06 kg (2.3 lb)
Arches	2 (four half-arches)
Material	Gold, silver, platinum
Cap	Velvet trimmed with ermine
Notable stones	Cullinan II, St Edward's Sapphire, Black Prince's Ruby, Stuart Sapphire
Predecessors	Coronation Crown of George IV

The Imperial State Crown is the state crown of the British monarch. Based on the design of Queen Victoria's Crown of 1838, which had fallen into disrepair, it was made in 1937 for the coronation of King George VI. The crown remains in use today at coronations and State Openings of Parliament. It is adorned with 3,170 precious stones, including the 317-carat (63 g) Cullinan II diamond, St Edward's Sapphire, the Stuart Sapphire, and the Black Prince's Ruby (a large red spinel).