Sandstone

Sandstone is a solid block. It is found naturally at the bottom of sand stacks, and can also be crafted from sand.

Chiseled sandstone is a decorative form of sandstone with a Creeper face and various small carvings on it. They are found in desert temples or wells.

Smooth sandstone is a decorative form of sandstone with a smoother texture. Like chiseled sandstone, it is found in a desert temple or a desert well, but it is also found in NPC villages in deserts.

Obtaining
Sandstone can be mined with any pickaxe.

Natural generation
Sandstone normally appears at the lowest levels of sandy areas (deserts, beaches, etc.) and supports the sand above it, but if a lake is generated there, air may replace the sandstone and result in volumes of unsupported sand which will collapse if disturbed. The sandstone layer in sandy biomes forms “stalactites” on the bottom, which penetrate the stone below or hang down into caves.

Usage
Unlike sand, sandstone is not affected by gravity, and it will not fall if placed without a supporting block underneath it.

Trivia

 * Note that sandstone and red sandstone are not directly related, i.e. one is not a subtype of another.
 * Sandstone is among the weakest blocks that cannot be harvested by hand, along with snow blocks and Netherrack.
 * If you look carefully at a smooth sandstone you can notice the number "2" on it, formed accidentally by the variation of its pixels' colors.
 * The creeper face on sandstone is actually one pixel too short.
 * As mentioned above, since Slabs are treated as stone in terms of blast resistance, converting a stack of 63 Sandstone blocks into 126 Sandstone Slabs and then building using the slabs in pairs effectively provides the same appearance as using Sandstone blocks but with 7.5 times as much blast resistance.
 * Sandstone appears grey on a Map, making it look like Stone.
 * Since generated caves do not remove sandstone stalactites, it's not uncommon to find a ravine in a desert with a patchy layer of sandstone covering it 2-4 blocks below ground level.
 * It can also be used to mix and match; if you want to create some more smooth sandstone but only have 3 normal sandstone, pop a smooth one in there and the job is done.
 * In Pocket Edition, Sandstone Stairs are called “Sand Stone Stairs”.