The King’s coronation procession will be led by a cross that includes religious relics gifted to the monarch by the Pope.
Two shards of the True Cross – which is said to be the cross used in the crucifixion of Jesus Christ – were given to Charles by Pope Francis to mark the coronation.
The small fragments have been incorporated into the Cross of Wales, which will be seen by millions as it is carried into Westminster Abbey on May 6.
Both pieces are shaped as crosses, one being 1cm in size and the other 5mm, and are set into the larger silver cross behind a rose crystal gemstone so they can only be viewed up close.
The Cross of Wales, which is a gift from the King to the Church in Wales to celebrate its centenary, will be blessed by the Archbishop of Wales, Andrew John, in a service at Holy Trinity Church, Llandudno, North Wales on Wednesday before it heads to London.
Upon its return, the cross will be shared between the Anglican and Catholic churches in Wales.
Crafted from recycled silver bullion, provided by the Royal Mint in Llantrisant, South Wales, the cross also includes a shaft of Welsh windfall timber and a stand of Welsh slate.
Words from the last sermon of St David are inscribed on the back of the cross in Welsh, which read: ‘Byddwch lawen. Cadwch y ffydd. Gwnewch y Pethau Bychain’, translated as: ‘Be joyful. Keep the faith. Do the little things.’
The silver elements of the cross bear a full hallmark, including the Royal Mark – a leopard’s head, which was applied by the King himself in November 2022 when visiting The Goldsmiths’ Centre in London.
Archbishop Andrew said: ‘We are honoured that His Majesty has chosen to mark our centenary with a cross that is both beautiful and symbolic.