Red Sandstone

Red sandstone is a type of sandstone that is composed of red-colored sand grains.
It is typically formed in desert environments, where the sand is colored by iron oxide.
Red sandstone is a relatively soft stone, with a Mohs hardness of 6 to 7.
It is also a relatively porous stone, with a water absorption rate of up to 10%.
Red sandstone is often used for decorative purposes, such as in building facades and garden walls.