Sandstone, the sedimentary rock is composed of small grains cemented by silica, with felspathic, or calcareous cementing material. Sandstone is mostly formed in layers and has varied applications as building stones. The formation of sandstone is a result of consolidation of sand and held together by a natural cement, such as silica. The consolidation takes place when the masses of sand are deposited by wind, water or other natural forces. The durability of rock depends on the cementing material. Being homogeneous and soft, sandstone can be easily carved and chiseled into various artifacts. The color of the rock is largely determined by the cementing material – iron oxides for example produces red or reddish-brown sandstone, and the other materials produce sandstone in the shades white, gray or yellow.