The naturally hard and dense stone withstands stains and scratches and is also nonporous, making it resistant to frost and mildew. Mother Earth offers slate in myriad hues, from grey to green to orange; the high degree of natural color differentiation gives it a beautifully variegated and one-of-a-kind look—and makes it a great choice for mosaics. Offered in 4-inch and 12-inch field tiles and three sizes of mosaic, all on 12-inch mesh-backed sheets.