Long, long ago, the continents were squeezed together by rocks beneath the oceans. As the hardened sea floors pushed upwards, they gave way to intense heat and pressure. This process helped create a finely-grained rock called slate. Natural slate exhibits beautiful color variations, boasting natural clefting with a unique, one-of-a-kind texture. With a look and feel reminiscent of the ocean depths from which it came, Montana Tile and Marble natural slate is available in standard and large format sizes.