Know all about Tuff and Greywacke properties here. All properties of rocks are important as they define the type of rock and its application. Tuff belongs to Igneous Rocks while Greywacke belongs to Sedimentary Rocks.Texture of Tuff is Clastic, Pyroclastic whereas that of Greywacke is Clastic. Tuff appears Dull, Vesicular and Foilated and Greywacke appears Dull. The luster of Tuff is vitreous to dull while that of Greywacke is dull. Tuff is available in brown, grey, yellow colors whereas Greywacke 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 Tuff are creating artwork and that of Greywacke are as armour rock for sea walls, petroleum reservoirs, sea defence, tombstones.