Sandstone is a sedimentary rock group which is mostly made up of tiny grains of quartz. The hemical constitution of sandstone is the same as that of sand; the rock is thus composed essentially of quartz. Its color varies from red, green, yellow, brown, gray and white. These stones are durable, weather, acid and thermal resistant and have crushing strength. They come in many colors, shades. The variation is result of binding material and its percentage of constituent.