Charles will be crowned with the historic St Edward's Crown that has been used since the coronation of King Charles II in 1661.
The Cullinan 1 diamond, known as the Star of Africa, which weighs in at 530 carats and is the world's largest colourless cut diamond, was set in the bejewelled golden sceptre which has been used in every coronation since 1661.
This is the second sceptre used in the ceremony, representing the sovereign's spiritual role. It also dates from 1661. At the top is an enamelled dove with outspread wings, which represents the Holy Ghost.
The Sovereign's Orb is a globe of gold with a cross mounted on top, surrounded by a band of diamonds, emeralds, rubies, sapphires and pearls with a large amethyst at the summit.
The Coronation ring, known as "The Wedding Ring of England", was made for the coronation of King William IV in 1831. Worn at every coronation since then, it symbolises kingly dignity.
Several swords will feature in the coronation procession. These include the Sword of State, Sword of Temporal Justice, the Sword of Spiritual Justice and the Sword of Mercy. Two maces, dating from between 1660 and 1695, will also feature.
The golden ampulla, which dates from 1661, is a flask in the shape of an eagle that holds the holy oil, which was consecrated in Jerusalem in March and will be used to anoint the king.
The silver-gilt spoon is the oldest piece in the regalia, probably made for Henry II or Richard I in the 12th century. It was used to anoint King James 1 in 1603 and has featured at every coronation since.
Two armills, golden bracelets representing sincerity and wisdom, are placed on the sovereign's wrists. They are thought to relate to ancient symbols of knighthood and military leadership.
The king and his wife will be taken from Buckingham Palace to the Abbey in the Diamond Jubilee State Coach, built to commemorate Elizabeth's 60th year on the throne and first used in 2014.
After the service, the couple will return in the Coronation Procession. For this, Charles and Camilla will travel in the 260-year-old Gold State Coach which has been used at every coronation since William IV's in 1831.
Buckingham Palace has also revealed an official emoji to celebrate the coronation of King Charles III and Queen Camilla. The colourful cartoon motif depicts the 17th century jewelled solid gold St Edward’s Crown with purple velvet cap.