Hellstone Brick

Hellstone bricks are a special brick only found in the Underworld. They are used as the walls in the ruins of the Biome. Like Hellstone and Meteorite, it will burn the player if stood on (Wearing the Obsidian Skull cancels this effect), but it does not burn monsters. If used as building material, it will burn NPCs (except the Guide) and prevent them from moving into homes where Hellstone bricks are exposed.

Hellstone bricks can alternatively be crafted from a piece of Hellstone and a stone block. It is recommended to go to the Underworld and mine the buildings for bricks. Hellstone Bricks are made at a Furnace.

Unlike most bricks, they cannot be made into walls. Although Hellstone walls can be found in the Underworld, they cannot be picked up, and will shatter when broken.