Obsidian

When Obsidian is used to craft one component of the armor, the object gains an enhancement.

An Obsidian object adds + 1% Melee Damage Reflection.

Trivia

 * Obsidian seems to be fragments of the shattered moons caused by the Cataclysm, and not related to obsidian glass. It shares many properties with Blackrock in the Ultima series.
 * Obsidian may be named after the Obsidian Order, or vice versa.