Know all about Gritstone and Tuff properties here. All properties of rocks are important as they define the type of rock and its application. Gritstone belongs to Sedimentary Rocks while Tuff belongs to Igneous Rocks.Texture of Gritstone is Earthy whereas that of Tuff is Clastic, Pyroclastic. Gritstone appears Layered and Foliated and Tuff appears Dull, Vesicular and Foilated. The luster of Gritstone is dull while that of Tuff is vitreous to dull. Gritstone and Tuff are 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 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 Tuff are creating artwork.