St Edward's Crown is one of the oldest Crown Jewels of the United Kingdom and the centrepiece of the coronation regalia. Named after Edward the Confessor, it has traditionally been used to crown English and British monarchs at the coronation ceremony. The current version, made for the coronation of Charles II in 1661, is 30 cm (12 in) tall and weighs 2.23 kg (4.9 lb), and has four fleurs-de-lis and four crosses pattée, supporting two dipped arches topped by a monde and cross pattée. Its purple velvet cap is trimmed with ermine. The frame is made of gold and decorated with 444 semi-precious stones, including amethysts, garnet, olivine, peridot, rubies, sapphires, topazes, tourmalines and zircon. It is part of the British monarchy's Royal Collection and, when not in use, is on public display with the rest of the Crown Jewels in the Jewel House at the Tower of London.