|Release date||21 November 2006 (Update)|
|High Alch||1 coin|
|Low Alch||1 coin|
|Store price||Not sold|
|Exchange price||1 coins (info)|
|A thick, foul-smelling, tar-like substance with a green tinge.|
Players can create guam tar at level 19 Herblore, gaining 30 experience per 15 guam tar made. This is done with 15 lumps of swamp tar used on a guam leaf while having a pestle and mortar, resulting in 15 lumps of guam tar.
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