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