Stone is a block found underground. It changes its appearance after it is first harvested.
Stone comprises most of the world below the surface.
Stone can be used to craft tailor's benches, furnaces, a press, mixing benches, dye benches, portals, and stone tools.
Five stone can be used to upgrade a workbench from level one to level two.
Five stone can be used to upgrade a tool bench from level one to level two.
Like most blocks, stone can be used in construction.
Below certain levels, a world will have a permanent, dominant "back wall" of stone. This can be referred to as "bedrock" and usually begins immediately below the bottom layers of dirt, sand, or water that make up the surface.