Rock dug from the very bowels of Hell - used to forge up to +5 metal equipment.
Weapons automatically gain the "flame tongue" characteristic - First 10 cold damage per round absorbed. 1/day can blast forth a fiery ray at any target within 30 feet as a ranged touch attack. The ray deals 4d6 points of fire damage on a successful hit.
Armor automatically gains - First 10 cold damage per round absorbed.
May also be used to form a gate to the lower planes.