Know all about Gritstone and Phyllite properties here. All properties of rocks are important as they define the type of rock and its application. Gritstone belongs to Sedimentary Rocks while Phyllite belongs to Metamorphic Rocks.Texture of Gritstone is Earthy whereas that of Phyllite is Phyllitic Sheen, Slaty. Gritstone appears Layered and Foliated and Phyllite appears Crinkled or Wavy. The luster of Gritstone is dull while that of Phyllite is phyllitic. Gritstone is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors whereas Phyllite is available in black to grey, light greenish grey colors. The commercial uses 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 and that of Phyllite are cemetery markers, commemorative tablets, creating artwork, writing slates.