Royal Ring

"You have to take this. It bears the royal seal. In my absence, responsibility to the kingdom rests with you."

- Arthur to Agravaine

The Royal ring is a ring that bears the Pendragon seal. It is owned by a king or someone else who is responsible for the kingdom of Camelot. Arthur left the ring with Agravaine when he went with Merlin and the Knights of the Round Table to Isle of the Blessed. It meant that Agravaine had the responsibility to rule the kingdom and that he would assume to the throne if Uther should die. This act showed how much Arthur trusted his uncle.