The Crystal chime is obtained during The Path of Glouphrie quest by using a crystal saw or small crystal seed on the singing bowl that is located in Yewnock's cave in the Gnome Village Dungeon (not the singing bowl in Brimstail's cave). To find the bowl, enter the dungeon and crawl through the tunnel in the north-east room. Push the monolith in front of you one space north, then go around it. Push the south-western monolith north, then the north-western monolith east, and the last small monolith south. Using a crystal saw on the bowl changes the saw into a small crystal seed, then use the crystal seed on the bowl to change it into crystal chimes.
To change a small crystal seed or crystal chime back to a crystal saw, go to Brimstail's cave in the Tree Gnome Stronghold and use it on the singing bowl in the western room. The singing bowl can be reached by crossing the crystal bridge to the island in the rift, and it looks a bit like a fountain.
The crystal chime may be added to the Slayer section of the tool belt. A crystal chime must be in a player's inventory or on the tool belt when attacking warped terrorbirds or warped tortoises, otherwise they will be immune to all attacks.
Upon dying, your crystal chime will be destroyed and you will have to replace it by getting another crystal seed from Brimstail, then transforming it in Yewnock's cave again.
Upon using the chime whilst fighting against a Warped terrorbird or Warped tortoise, your character will stop fighting upon the first hit. The only way to block this is to click on the monster you are attacking again or turn on auto-retaliate.
Before an update on 3 March2010 players were required to click on the chimes in your inventory before the Tortoise/Terrorbirds could be cleansed.