Know all about Greenschist and Gritstone properties here. All properties of rocks are important as they define the type of rock and its application. Greenschist belongs to Metamorphic Rocks while Gritstone belongs to Sedimentary Rocks.Texture of Greenschist is Foliated, Platy whereas that of Gritstone is Earthy. Greenschist appears Layered and Shiny and Gritstone appears Layered and Foliated. The luster of Greenschist is shiny while that of Gritstone is dull. Greenschist is available in dark greenish - grey, green 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 Greenschist are blackboards, manufacture of tools, 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.