European tradition of eight half-arches Many crowns of continental European monarchs traditionally contain eight half-arches; examples from extant monarchies include the royal crowns of
Denmark,
the Netherlands,
Norway,
Spain and
Sweden. The only example of a crown of a British monarch with eight half-arches is the
Imperial Crown of India, made for King
George V as
Emperor of India to wear at the
Delhi Durbar of 1911. The crowns of two 20th century British
Queens consort also have eight half-arches, namely the
Crown of Queen Alexandra (1902) and the
Crown of Queen Mary (1911), reflecting their origins as European princesses from
Denmark and
Germany respectively.
British tradition of four half-arches In contrast, the crowns of
British monarchs traditionally contain four half-arches; examples include
St. Edward's Crown, the
State Crown of George I, the
Coronation Crown of George IV and the
Imperial State Crown, and also the
Crown of Scotland. The same is true for several British
consort crowns, namely the
State Crown of Mary of Modena, the
Crown of Queen Adelaide and the
Crown of Queen Elizabeth The Queen Mother.
Crown of the Prince of Wales's single arch The three crowns in existence of the
Prince of Wales, the
heir apparent to the
British throne, all have one full arch, with a globe centred on the single arch rather than being the element to which each arch separately is joined, following an instruction laid down by King
Charles II in 1677. Unlike the princely crowns of 1902 and 1969 however, where the single arch rises, in the
Crown of Frederick, Prince of Wales (1728) the single arch dips in the centre, with the globe located in the centre of the dip. ==Shape of arch==