Adamantine

From WoWWiki

This article or section contains lore taken from the Warcraft RPG books.

Adamantine is an ultra-hard metal that adds to the quality of a weapon or suit of armor. Weapons fashioned from adamantine have a natural ability to bypass hardness when sundering weapons or attacking objects. Only weapons, armor, and shields normally made of metal can be fashioned from adamantine; an arrow (the arrowhead) can be made of adamantine, but a quarterstaff cannot.^{WoWRPG 193}