Sandstone is a type of rock that forms when grains of sand are compressed together for long periods of time. Normally this sand is rich in quartz but can also contain other minerals and materials. Sandstone comes in a variety of colors including yellow, brown, red and gray.
Sandstone is a popular material for outdoor or indoor decorating and paving, most commonly this material is used around the area of a swimming pools where it is likely to get wet, because of the grainy structure this stone is not slippery.