Ring of Dueling

The ring of dueling is a teleportation ring that may be made by casting Enchant Level 2 Jewellery on an emerald ring. A full ring of duelling will provide 8 teleports before it crumbles away into nothing. The ring of dueling can be used to teleport to the Castle wars minigame, and the Al-Kharid  Duel Arena.
The ring of dueling is a common drop from Mummies