Limestone is a sedimentary stone created by the accumulation of finely eroded particles of rock and other fine materials carried by the wind or water most often collecting in basins and seabeds. These deposits densified over the millions of years of the earth’s development to create uniform layers or formations. The layers of sediment contain organic material that is cemented with other materials that are sometimes inorganic in origin. Many limestones are sawn parallel to the bedding plane (cross cut) or perpendicular to the bedding plane (vein cut).