|Release date||12 April 2010 (Update)|
|High Alch||6 coins|
|Low Alch||4 coins|
|Smuggler price||3 coins|
|Store price||Not sold|
|Examine||Used to power some ancient device.|
Mysterious Power crystals operate the portal in one of the rooms in the Furnished floors of Daemonheim, encountered whilst Dungeoneering. The crystals power the lodestones either side of the portal in the boss room where Stomp, a powerful and magical Behemoth, appears, and the player must power up the lodestone with crystals of a certain colour (red, green or blue) in order to stop Stomp from healing himself. When all of the crystals have been powered up, the portal will close, and Stomp's head, now stuck on one side of the portal while the rest of his body is on the other, will be severed, and he will die.
If you will activate only one lodestone, having two in your inventory and letting stomp heal self, next rockfall will give you only one power crystal.