Sandstone is a sedimentary stone that is typically the result of quartzite stone being eroded and redeposited by either wind or water. Sandstone mostly consists of quartz, silica, iron oxide and calcium carbonate and is durable, weather, acid and thermal resistant and has crushing strength. They can at most honed polish and are used as garden  and commercial landscapes, exterior wall cladding, etc. They come in an array of colors & shades and can be chiseled and dressed to a smooth surface in various attractive shapes.