Mastery Tokens

Mastery Tokens give 0.1% of the maximum mastery pool XP to Mastery Pool of the corresponding skill when they are claimed. Mastery Tokens are earned randomly while training a non-combat skill. The drop chance for mastery tokens is 1 in [math]\displaystyle{ \frac{18\,500}{\text{Actions unlocked for skill}} }[/math]. Each thing you unlock by leveling the skill counts as a action e.g. smithing steel platelegs is unlocked at level 40 and counts as one action. Wearing Clue Chasers Insignia increases the drop chance by changing it to 1 in [math]\displaystyle{ \frac{18\,500}{1.1 \times \text{Actions unlocked for skill}} }[/math].

Note that for

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Fishing

specifically, it is more beneficial to wear the

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Amulet of Fishing

instead of the Clue Chasers Insignia. This is due to the Fishing interval reduction provided by the amulet, which increases the number of actions over time, and in turn results in a greater increase in the average number of mastery tokens obtained when compared to the Clue Chasers Insignia. In addition, the Amulet of Fishing also increases the rate at which fish (and therefore XP) is gained.

Mastery Token Chance at Maximum Levels

Token	Skill	Approximate Mastery Token Chance
		Base Game (Level 99)		Throne of the Herald (Level 120)
		Without	With	Without	With
	Error creating thumbnail: File missing Smithing	1/119	1/109	1/87	1/79
	Error creating thumbnail: File missing Runecrafting	1/210	1/191	1/133	1/121
	Error creating thumbnail: File missing Crafting	1/256	1/234	1/162	1/148
	Error creating thumbnail: File missing Fletching	1/260	1/237	1/186	1/170
	Error creating thumbnail: File missing Agility	1/342	1/311	1/234	1/213
	Error creating thumbnail: File missing Herblore	1/513	1/467	1/355	1/323
	Error creating thumbnail: File missing Cooking	1/544	1/495	1/342	1/311
	Error creating thumbnail: File missing Farming	1/685	1/623	1/474	1/431
	Error creating thumbnail: File missing Fishing	1/711	1/647	1/462	1/420
	Error creating thumbnail: File missing Thieving	1/804	1/731	1/544	1/495
	Error creating thumbnail: File missing Summoning	1/880	1/801	1/637	1/580
	Error creating thumbnail: File missing Mining	1/1,423	1/1,294	1/804	1/731
	Error creating thumbnail: File missing Astrology	1/1,541	1/1,402	1/1,156	1/1,051
	Error creating thumbnail: File missing Firemaking	1/1,681	1/1,529	1/925	1/841
	Error creating thumbnail: File missing Woodcutting	1/1,681	1/1,529	1/925	1/841
	Error creating thumbnail: File missing Archaeology	1/0	1/0	1/0	1/0
?	Error creating thumbnail: File missing Harvesting	1/0	1/0	1/0	1/0