Crown of Queen Elizabeth The Queen Mother
The Crown of Queen Elizabeth The Queen Mother, also known as the Queen Mother's Crown, is the crown made for Queen Elizabeth to wear at her coronation in 1937 and State Openings of Parliament during the reign of her husband, King George VI. Wikipedia
Arches: 4 half-arches
Made: 1937
Material: Platinum
Notable stones: Koh-i-Noor
Other elements: 2,800 diamonds
Owner: Charles III in right of the Crown