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