Blackstone Slab is a Nether block for hellscape bases, bastions, and fiery builds. As a slab it is half a block tall, for floors, roof edges, and steps. Mix it with other Nether blocks such as blackstone, basalt, and nether bricks, and add warm light from shroomlight or glowstone.
Blocks to try around it, picked by color and surface detail. These are suggestions, not rules.
Ranked by the average color of each block's texture. A close color is a starting point for a palette, not a rule.