The crown of Queen Alexandra was a new consort crown, whose style was more akin to the European royal crowns, than the standard style of the British crowns. The arches were detachable, which like the crown of Queen Elizabeth, meant the crown could be worn
Imperial State Crown of England with its amazing stones such as the Cullinan II Diamond, the Black Princes Ruby, the Stuart and St Edward Sapphires. This version of the Imperial State Crown was worn by George V and is now housed in the Tower of London
Greece 10 In Albrecht, Duke of Bavaria presented the Greek Crown Jewels (also called the Greek Regalia) back to King Paul of Greece. Greek monarchs since Otto had not been crowned. Nevertheless the Crown Jewels of Otto were accepted and remain in Greece.
Part of the dutch cut Cullinan diamond HRM is wearing the Imperial State Crown of Great Britain, which incorporates the "Black Prince's Ruby", a 140 ct. The crown was modified for Queen Elizabeth II prior to the 1953 coronation.