Hellstone Brick

Hellstone Bricks require 1 Hellstone and 1 Stone Block to craft. Players without an Obsidian Skull in their accessory slot will take damage from touching the brick. As with most damaging blocks, NPCs and enemies will not take any damage from contact with Hellstone Bricks.

Unlike Hellstone itself, Hellstone Bricks aren't immune to dynamite's explosions but are immune to bomb's explosions.