Know all about Hornfels and Scoria properties here. All properties of rocks are important as they define the type of rock and its application. Hornfels belongs to Metamorphic Rocks while Scoria belongs to Igneous Rocks.Texture of Hornfels is Granular, Platy whereas that of Scoria is Vesicular. Hornfels appears Dull and Scoria appears Glassy and Vesicular. The luster of Hornfels is shiny while that of Scoria is subvitreous to dull. Hornfels is available in brown, dark greenish - grey, green, reddish brown colors whereas Scoria is available in black, brown, dark grey to black, red colors. The commercial uses of Hornfels are cemetery markers, commemorative tablets, creating artwork and that of Scoria are as a traction material on snow-covered roads, creating artwork, high-temperature insulation, in gas barbecue grills.