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Type Crafting material
Max stack 999
Rarity Rarity Level: 0
Use time 14

Obsidian is a unique crafting material created when Water and Lava collide, at which point it forms in purple Stone-like Blocks that can be mined. Obsidian appears as an Ore and is gathered similarly, but has no bar form of its own; though it is required in order to craft the essential Hellstone Bars. Mining Obsidian requires a Nightmare Pickaxe, Deathbringer Pickaxe, Molten Pickaxe, any Drill, or Bombs/Dynamite.


Used in[edit]

Result IngredientsCrafting Station
Abeemination.png Abeemination (Console only.png console version) Honey Block.png Honey Block (5) Demon Altar.png Crimson Altar.png
Demon/Crimson Altar
Crispy Honey Block.png Crispy Honey Block (3)
Stinger.png Stinger
Hive.png Hive (5)
Obsidian.png Obsidian (2)
Bottled Honey.png Bottled Honey
Hellstone Bar.png Hellstone Bar Obsidian.png Obsidian (1) Hellforge.png Hellforge
Hellstone.png Hellstone (3)
Obsidian Brick.png Obsidian Brick Obsidian.png Obsidian (2) Furnace.png Furnace
Obsidian Skull.png Obsidian Skull Obsidian.png Obsidian (20)
Obsidian Chest.png Obsidian Chest Obsidian.png Obsidian (6)
Hellstone.png Hellstone (2)
Iron Bar.png Iron Bar (2)
Obsidian Skin Potion.png Obsidian Skin Potion Obsidian.png Obsidian Alchemy Station.png Alchemy Station
Waterleaf.png Waterleaf
Fireblossom.png Fireblossom
Bottled Water.png Bottled Water


  • Obsidian is not destroyed by Lava, despite not being of Blue Rarity.
  • Probably the easiest way to obtain a significant amount of Obsidian with minimal amounts of preparation is to find a body of water deep underground, just above the level at which lava pools begin to appear. Then dig a channel for the water to pour through until it reaches lava. If the lake is of a sufficient size, you can quite easily obtain enough Obsidian to craft hundreds of Hellstone Bars and Obsidian Skin Potions.
  • Obsidian is fairly rare naturally and will usually require player intervention to spawn.

Obsidian generator[edit]

Obsidian can be harvested by creating a generator. A generator is an exploit that allows the infinite creation of lava and water, to create obsidian. Liquids in Terraria can be duplicated in this way because of a game mechanism in which a full bucket will always produce one full block of liquid, while less than a block of liquid is required to fill the bucket.

This video contains a detailed explanation on how to set up the machine. You could also use three or four blocks on the lava duplicator, instead of two, in order to speed up lava duplication. This allows you to click faster, like the water duplicator, since the lava will spread out faster instead of taking time to actually fall off the block.

With the introduction of mechanisms such as Pumps, wire and timers in 1.1, it is now possible to construct an automatic obsidian generator, which does not require using buckets to repeatedly refill the lava or water vats.

A sample set-up of an automatic obsidian generator can be found here: [1]

Video detailing the construction of a fully automated Obsidian Generator using vats and pumps:


Consumables: Healing Potion.png Potions ( Inferno Potion.png Buff Potions) • Shuriken.png Consumable Weapons

High Velocity Bullet.png Ammunition • Jungle Grass Seeds.png Seeds • Fallen Star.png Materials ( Feather.png Drops • Copper Ore.png Ores • Iron Bar.png Bars) • Silver Coin.png Other