Perfect juju mining potion

A Perfect juju mining potion is a potion made using the Herblore skill. It is made by combining a juju mining potion (3) with harmony moss, requiring 80 Herblore and giving 126.5 experience. This makes a three dose potion, and it can be decanted into other doses by talking to Bob Barter (herbs). It can also be turned into a six-dose Perfect juju mining flask by talking to Teplin Macagan with a potion flask.

A dose of the potion is believed to last for one hour. While the potion is in effect, each ore mined gives a 10% chance of finding an enhanced stone spirit, which does the same thing as the regular juju mining potion (automatically banking ore), and also will smelt ore that the player mines, although smelted coal will yield no bars. The Stone Spirit will also grant a 10% bonus experience while obtaining ores, including extra ores obtained with the Varrock armour and bonus ores gathered from concentrated coal and gold rocks. Smelting coal will give the player the same experience as smelting a steel bar. Goldsmith gauntlets do not increase the xp received from gold bars that are smelted by the stone spirit.