Obsidian Weapons

are several recipes that can be learned at the end of The Well of Skelos dungeon, including:
* Obsidian Arrow (Knowledge)
* Obsidian Dagger (Knowledge)
* Obsidian Javelin (Knowledge)
* Obsidian Mace (Knowledge)
* Obsidian Shield (Knowledge)
* Obsidian Spear (Knowledge)
* Obsidian Sword (Knowledge)
* Obsidian Throwing Axe (Knowledge)
* Obsidian Two-Handed Sword (Knowledge)
* Obsidian Warhammer (Knowledge)