A coronet is a special crown worn by nobles on State occasions and represented above their coats of arms. The designs vary according to the rank of the wearer. In England, the Prince of Wale's coronet is distinguished from the royal crown by having a single instead of a double arch. A duke's coronet has on the rim eight strawberry leaves; that of a marquis, four strawberry leaves and four silver balls alternately; that of an earl has eight silver balls on long spikes alternating with strawberry leaves set lower; a viscount's coronet has sixteen silver balls close together, and a baron's six. Coronets for earls were first allowed by Henry II; for viscounts by Henry VIII and for barons by Charles II. Research Coronet