Polished Blackstone Brick Slab is a polished blackstone brick variant of a slab. It generates naturally in ruined portals in the Nether and can be crafted or obtained through stonecutting. Polished blackstone brick slabs can be mined with any pickaxe. If mined without a pickaxe, they drop nothing.
They can be crafted using polished blackstone bricks or obtained through stonecutting. Polished blackstone brick slabs function like other slabs in terms of placement and collision. They can also be placed under note blocks to produce a bass drum sound.