Sandstone Slab

Sandstone Slabs are craftable blocks, crafted using three Sandstone in a horizontal line. Sandstone Slabs behave like Stone Slabs, and were introduced in Beta 1.3 alongside Wooden Slabs and Cobblestone Slabs.

Although cobblestone slabs, wood slabs, sandstone slabs, and stone slabs can be put on top of each other, you cant have two different slabs directly on top of one another, this is shown in this video.