Know all about Hornfels and Sandstone properties here. All properties of rocks are important as they define the type of rock and its application. Hornfels belongs to Metamorphic Rocks while Sandstone belongs to Sedimentary Rocks.Texture of Hornfels is Granular, Platy whereas that of Sandstone is Clastic, Granular, Rough. Hornfels appears Dull and Sandstone appears Rough. The luster of Hornfels is shiny while that of Sandstone is dull. Hornfels is available in brown, dark greenish - grey, green, reddish brown colors whereas Sandstone 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 Hornfels are cemetery markers, commemorative tablets, creating artwork and that of Sandstone are an oil and gas reservoir, in aquifers, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones, used in aquariums.