The Obsidian Armor is an armor from the Shipwrecked DLC. It can be crafted with 1 Log Suit, 5 Obsidian and 1 Dragoon Heart. Like other Obsidian recipes, it cannot be prototyped. Crafting it requires the player to be standing near the Obsidian Workbench or wearing a Brain of Thought.
The armor acts similarly to the Scalemail from the Reign of Giants DLC. It grants fire immunity to the wearer and will ignite attackers, however unlike Scalemail, it does not restore sanity while worn. It has 1350 durability and absorbs 70% of physical damage.