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Mithril is a material for items that appears in NetHack.

Mithril is a lightweight metal used by dwarves and elves to produce armor. It is immune to erosion, but since it is metallic it will hinder spellcasting.


The two main items made of mithril are the dwarvish and elven mithril-coats, which provide 6 and 5 base AC, respectively; they are the lightest such suits of body armor for the AC they provide. The Amulet of Yendor is made of mithril, though this does not have any noticeable effect other than preventing it from being damaged.

Metallivores such as rock moles and xorns can eat any item made of mithril, save for the Amulet.


Mithril is a material derived from the Middle-earth setting created by J. R. R. Tolkien.


Some variants add new items made of mithril, and variants that implement an object materials system also make it possible for certain metallic items to be made of mithril.


In SLASH'EM, the dark elven mithril-coat is a suit of body armor made from the material, and is functionally identical to a dwarvish mithril-coat.


In UnNetHack, chunks of raw mithril ore can be found buried on the first level of the Ruins of Moria, but due to being unrefined they are considered stones (and thus made of mineral) rather than actual mithril. Their only purpose is to be sold at shops, where they are priced at more than twice the value of a dilithium crystal.


In dNetHack, mithril weighs half as much as iron. High-elven armor and weapons use mithril as the base material.

Four dNetHack artifacts are made of mithril:

In addition, it is possible to create a mithril Excalibur by dipping a mithril long sword, though these are usually difficult to find.


In xNetHack, mithril body armor always grants at least MC2. Dwarvish and elven mithril-coats are replaced by racial ring mail - a dwarvish or elven ring mail made of mithril thus acts identically to a mithril-coat. Hobbits that are given an elven ring mail will always get a mithril one; dwarf lords and kings that get a dwarvish ring mail have an increased chance of it being mithril.


In EvilHack, mithril gives a +2 damage bonus to slashing and piercing weapons, and is among one of the better materials for armor in particular. Mithril is inherently fixed, but is still subject to decay via the monster spell destroy armor. Elves wearing mithril body armor are granted MC3, compared to MC2 for all other races. Orcish monsters are mithril-hating - they take extra damage from mithril weapons, and orcs wielding or wearing any mithril that make skin contact take damage from that action and temporarily lose HP regeneration until it is unwielded or taken off. Wielding such an item without gloves will also result in a -1 Luck penalty.

Most objects with a base material of iron, steel, or wood have a low chance to be randomly generated as mithril, including non-cloth armor and weapons of dwarvish and elven make. Horns, most bows and reflective objects also have a slightly higher chance to generate as mithril, and staves of matter use mithril as their base material. The artifact weapon Dirge is a mithril long sword.


In addition to SLASH'EM changes, SlashTHEM features the mithril ring as a randomized ring appearance.

Encyclopaedia entry

_Mithril_! All folk desired it. It could be beaten like
copper, and polished like glass; and the Dwarves could make
of it a metal, light and yet harder than tempered steel.
Its beauty was like to that of common silver, but the beauty
of _mithril_ did not tarnish or grow dim.

[ The Fellowship of the Ring, by J.R.R. Tolkien ]