Crimson Stone is similar to normal stone, except it only generates in the Crimson dimension. It uses the stone texture, but tinted purple-ish-red. It takes a little longer to mine it than normal stone. In 1.7, it drops itself as there isn't a cobblestone variant of it.
Obtaining[ | ]
You can get it naturally in 1.7 as it drops itself. But after 1.7.1, you can silk touch it, or smelt the cobblestone.
Usage[ | ]
There is no real use for this other than decorative and to generate as the normal type of stone in the crimson dimension.