It consists of a Obsidium Longcoat and Obsidium Pants as well as six different headpieces: the Obsidium Headguard, Obsidium Headgear, Obsidium Hat, Obsidium Mask, Obsidium Band, and the Obsidium Helmet.
The Obsidium Longcoat gives 8 defense and immune to Lava, along with On Fire! and Burningdebuff. The Obsidium Boots gives 7 defense, provides infinite water walking, free movement in liquids, and 10% increased movement speed.
The Obsidium Hat gives 6 defense, 15% increased magic damage and increases maximum mana by 60.
The Obsidium Band gives 6 defense, 15% increased throwing damage, +4 defense, and 33% increased throwing velocity.
The Obsidium Headguard gives 6 defense, 15% increased melee damage, and 10% damage reduction.
The Obsidium Mask gives 6 defense, 15% increased summon damage and +3 max minion.
The Obsidium Headgear gives 6 defense, 15% increased ranged damage, and 10% increased ranged critical strike chance.
The Obsidium Helmet gives 6 defense, 15% increased mystic damage, and 200% increased mystic duration.
Obsidium armor's set bonus makes all attacks will inflict On Fire!debuff.
A full set will always provide at least 23 defense.