Know all about Tuff and Hornfels properties here. All properties of rocks are important as they define the type of rock and its application. Tuff belongs to Igneous Rocks while Hornfels belongs to Metamorphic Rocks.Texture of Tuff is Clastic, Pyroclastic whereas that of Hornfels is Granular, Platy. Tuff appears Dull, Vesicular and Foilated and Hornfels appears Dull. The luster of Tuff is vitreous to dull while that of Hornfels is shiny. Tuff is available in brown, grey, yellow colors whereas Hornfels is available in brown, dark greenish - grey, green, reddish brown colors. The commercial uses of Tuff are creating artwork and that of Hornfels are cemetery markers, commemorative tablets, creating artwork.