Symbols of imperial Majesty: St Edward's Crown, with 444 precious stones, remains one of the senior Crown Jewels of the United Kingdom, being the official coronation crown. Imperial State Crown, symbolises the sovereignty of the monarch, there have been several versions since the 15th century, similar to that of St Edward's Crown, but shorter and encrusted with jewels, precious gems, diamonds, pearls, sapphires, emeralds and rubies. State Crown of Queen Mary Consort of King George V of England. Imperial Crown of India, was the crown of three British sovereigns as Emperors of India during the final decades of the Indian Empire.