Imperial Crown of India was made for King George V to wear at the Delhi Durbar in 1911 when he was acclaimed Emperor of India. A special crown had to be made as the Imperial State Crown cannot be taken out of England
Queen Alexandra's Crown was a new consort crown whose style was more akin to European royal crowns, than the standard style of British crowns. The arches were detachable which, like the Crown of Queen Elizabeth, meant the crown could be worn as a circlet.
From the Danish Crown Jewels, The Queen's Crown, made for Queen Sophie Magdalene by court jeweller Frederik (I) Fabritius in It was in use until The table-cut stones are believed to have come from Queen Sophie Amalie's crown from