Stoneiron

This weaker version of the enchanted weapon spell causes stone weapons (flint, obsidian, etc.) to attack and damage as common steel weapons, eliminating all penalties and chances of breakage. One large or two small weapons are affected by a single casting. Missiles affected by this spell lose its effect as soon as the missile strikes its target.

The only way to make the spell permanent is to use enchant an item and permanency spells as well; repeated castings do not improve the weapon's abilities any further.

The material component is a small chunk of stone, of the same type as the weapon to be enchanted.