|Release date||27 August 2015 (Update)|
|High Alch||27,000 coins|
|Low Alch||18,000 coins|
|Store price||Not sold|
|Exchange price||946,782 coins (info)|
|A smouldering stone from the depths of Hell.|
A smouldering stone is a stone dropped by Cerberus that can be used to upgrade the dragon axe, dragon harpoon, and dragon pickaxe into the infernal axe, infernal harpoon, and infernal pickaxe, respectively. These infernal tools have 5,000 charges and once fully depleted, another stone or dragon axe/pickaxe/harpoon must be used to recharge it.
You may not boost to use the smouldering stone to create any of the infernal items; you must have the required base levels of 85 Firemaking for the Infernal axe, 85 Smithing for the Infernal pickaxe, or 85 cooking for the Infernal harpoon.
The stone can be dropped by regular hellhounds as well, although at a much rarer rate. When dropped from a regular hellhound, a message will appear in the chatbox, "Something hot drops from the body of your vanquished foe."
Monster Combat level Quantity Rarity Cerberus 318 1 Hellhound 122 1
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