Half-arch (crown)
A half-arch is the piece of metal, usually gold, silver or platinum, and typically decorated with jewels, that links the circlet (circular base) of a hoop crown to the monde at the top of the crown. == Number of Arches == === 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.