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Corrupted ore detail.png

Corrupted ore, also called Seren corruption, is an ore gained from mining Seren Stones in Prifddinas or mining any rocks in the Trahaearn Clan's district when the Voice of Seren is active in the district. Mining the stones requires level 89 Mining. Obtaining ore awards 296.7 Mining experience, or 356 experience if the Voice of Seren is active in the Trahaearn Clan's district.

While the Voice is active in the district, corrupted ores may be obtained from mining any ore, including harmonised rocks; higher level ores yield corrupted ore at higher rates. Corrupted ores may be obtained from the crystal chest in the Iorwerth Clan's district.

With level 89 Smithing, corrupted ores can be used at furnaces, awarding Smithing experience. If using corrupted ores while the Voice is active in the district, swamp tar is produced at a rate of roughly 25%. Players are able to use temporary skill boosts to dispose of corrupted ores at furnaces.

Each corrupted ore gives 150 Smithing experience; 180 Smithing experience with the Voice of Seren active in the district. 1,500 corrupted ore can be used in one hour, equating to 225,000 experience an hour; increasing to 270,000 experience an hour with the Voice of Seren effect. After smelting their first 100 corrupted ores, players can claim an experience lamp worth 50,000 Smithing experience by speaking with Lady Trahaearn. She is located just south of the Seren Stones.

Mining urns do work with corrupted ores following the August 2017 Update which also allows urns to stack. Smelting urns do not work. Perfect juju mining potions and juju mining potions do not smelt corrupted ores or send ores to your bank, they do however provide the 10% experience boost while the stone spirit is summoned, which may make it worth the extra cost. While the effects of a perfect juju smithing potion are active, there is a chance that corrupted ore will be added to the inventory at random, while the player is training the smithing skill. Further, unless the player has completed the elite New Varrock Tasks, the Varrock armour's chance of smelting two ores at once does not work when smelting in Prifddinas. If the armour does smelt two ores at once while the Voice of Seren effect is in the Trahaearn district, the 20% boost to Smithing experience is not applied to the second corrupted ore. Casting Superheat Item on corrupted ores or using Superheat Form during the Voice of Seren will not provide the 20% experience bonus or swamp tar.

Smelting corrupted ore with the augmented crystal hammer or hammer-tron equipped gives 11.7 item experience.


Normally With Voice of Seren active
Corrupted ore.png Corrupted ore
Mining level Mining 89
Source Seren stone
Experience (per ore)
Mining 296.7 XP
Equipment 35.01 XP
[view] [talk]
Corrupted ore.png Corrupted ore
Mining level Mining 89
Source Seren stone
Experience (per ore)
Mining 356 XP
Equipment 42.008 XP
[view] [talk]


Corrupted ore.png Corrupted ore
Smithing level Smithing 89
Used with Furnace
Experience (per bar)
Smithing N/A
Equipment N/A
Experience (per ore)
Smelting 150 XP
Equipment 11.7 XP

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Drop sources

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For an exhaustive list of all known sources for this item, see here.
Source Combat level Quantity Rarity
Crystal chestN/A50Common
Hefin Agility CourseN/A1Rare
Motherlode MawN/A100–237Rare
Trahaearn workerN/A1Rare


  • The examine text of corrupted ore is a reference to the examine text of most ores, which read: "This needs refining."
  • It would take approximately 55,000 corrupted ore to reach level 99 Smithing from level 89, not including buffs from EXP-boosting items or consumables, or the Voice of Seren effect.