Know all about Tuff and Argillite properties here. All properties of rocks are important as they define the type of rock and its application. Tuff belongs to Igneous Rocks while Argillite belongs to Sedimentary Rocks.Texture of Tuff is Clastic, Pyroclastic whereas that of Argillite is Clastic, Polished. Tuff appears Dull, Vesicular and Foilated and Argillite appears Rough and Dull. The luster of Tuff is vitreous to dull while that of Argillite is waxy and dull. Tuff is available in brown, grey, yellow colors whereas Argillite is available in dark grey to black, pink, red, white colors. The commercial uses of Tuff are creating artwork and that of Argillite are fire resistant, used to manufracture paperweights and bookends.