Know all about Mylonite and Gritstone properties here. All properties of rocks are important as they define the type of rock and its application. Mylonite belongs to Metamorphic Rocks while Gritstone belongs to Sedimentary Rocks.Texture of Mylonite is Foliated whereas that of Gritstone is Earthy. Mylonite appears Dull, Banded and Foilated and Gritstone appears Layered and Foliated. The luster of Mylonite is shiny while that of Gritstone is dull. Mylonite is available in black to grey 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 Mylonite are creating artwork, gemstone, jewelry 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.