Know all about Slate and Gritstone properties here. All properties of rocks are important as they define the type of rock and its application. Slate belongs to Metamorphic Rocks while Gritstone belongs to Sedimentary Rocks.Texture of Slate is Foliated whereas that of Gritstone is Earthy. Slate appears Dull and Gritstone appears Layered and Foliated. The luster of Slate and Gritstone is dull. Slate is available in black, brown, buff, green, light to dark grey, purple, red, shades of blue colors whereas Gritstone is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors. The commercial uses of Slate are blackboards, commemorative tablets, laboratory bench tops, standard material for the bed of billiard table, standard material for the beds of pool and snooker table, tombstones, used in aquariums, writing slates and that of Gritstone are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo), tombstones.