Cobblestone Slab is crafted from three cobblestone blocks placed in a single horizontal row, yielding six slabs per recipe — the standard slab ratio applied to the cheapest stone material in vanilla. The texture preserves the chunky cobble pattern of the parent at half height, giving builders a low-cost half-block option for paths, paving, and rough finished floors.

For builders, this material is the workhorse of medieval-themed vertical detailing. Use it as a thin floor in mountain bases where the structure should feel hewn from native rock, as horizontal trim above doorways in dungeon corridors, or as a low garden border where a full block would look too imposing. Standard slab behaviour applies: bottom or top half placement, vertical merging with a same-type slab, flat upper face that accepts torches and signs. The block has no flammability and the same moderate blast resistance as the parent. A stonecutter accepts cobblestone blocks and produces the slab variant directly at one-to-one efficiency, useful when stockpiles are large.