The jar of dirt is a rare drop from the Kraken boss. It can be used on a boss lair display in a player's Achievement Gallery to have a display of the Kraken. Doing so requires killing it at least once.
For an exhaustive list of all known sources for this item, see here
- The jar of dirt is a reference to Pirates of the Caribbean: Dead Man's Chest, in which the film's protagonist, Jack Sparrow, receives a jar of dirt that later becomes important to the plot of the film; the owner of the contents of the jar has a 'pet' kraken giving a nod to the monster that drops this item.
- Using a jar of dirt on a jar of sand will cause the contents of the jars to swap.
- ↑ Jagex. Mod Ash's Twitter account. 7 March 2020. (Archived from the original on 27 May 2020.) Mod Ash: "The jar of dirt might pre-date us thinking it'd be a good idea to put easter eggs on them. It was only made as a random Pirates of the Caribbean tribute, and the dev apparently didn't know he'd made it tradeable until long afterwards."