Know all about Hornfels and Porphyry properties here. All properties of rocks are important as they define the type of rock and its application. Hornfels belongs to Metamorphic Rocks while Porphyry belongs to Igneous Rocks.Texture of Hornfels is Granular, Platy whereas that of Porphyry is Porphyritic. Hornfels appears Dull and Porphyry appears Dull. The luster of Hornfels is shiny while that of Porphyry is dull. Hornfels is available in brown, dark greenish - grey, green, reddish brown colors whereas Porphyry is available in black, brown, colourless, green, grey, red, rust, white colors. The commercial uses of Hornfels are cemetery markers, commemorative tablets, creating artwork and that of Porphyry are creating artwork, gemstone, jewelry.