Ring of duelling

Rings of duelling can be made by enchanting emerald rings using the spell Enchant Level 2 Jewellery. Each one allows 8 teleports. After all of the teleports have been used, the ring crumbles away to dust.

Teleports
The teleports may be chosen from the following locations:
 * Duel Arena
 * Castle Wars
 * Fist of Guthix (as of 27 January 2009)
 * Mobilising Armies (as of 8 July 2009)

On the 7th of October update, the ring of duelling was updated to allow a person to teleport more effectively when the ring is equipped. Originally, the ring had 3 options when equipped (Remove, Operate and Examine) but now has 6 options (Remove, Examine and 1 for each of the teleport spots). This significantly cuts down on teleport operation time.





Alchemy
One option to save money is to use High Level Alchemy spell on the ring after 7 charges are used up. For example if the ring is bought at coins and  coins are spent on a Nature rune, the cost of 7 teleports is 0 coins or  coins per teleport.

Trivia

 * When Mobilising Armies was released, the price for the ring of duelling rose drastically due to the fact that its adjacent spirit tree makes duelling rings the best way to access a spirit tree.
 * When you have the ring in your inventory and rub it, you can teleport to Al Kharid Duel Arena, Castle Wars Arena, Mobilising Armies Command Centre or Fist of Guthix. And when you equip It, it says Duel Arena, Castle Wars and Mobilising Armies. But the Fist of Guthix is the same.
 * Rings of duelling used to be valued by many for their teleport to Castle Wars, which was (and remains) a quick method to bank. However, more players are opting to use the Ring of kinship as a means of banking. Even though the ring of kinship's teleport is further away from a bank, it is able to teleport its user infinitely, versus a ring of duelling which only has eight charges.