Know all about Hornfels and Aplite properties here. All properties of rocks are important as they define the type of rock and its application. Hornfels belongs to Metamorphic Rocks while Aplite belongs to Igneous Rocks.Texture of Hornfels is Granular, Platy whereas that of Aplite is Granular, Graphic. Hornfels appears Dull and Aplite appears Veined or Pebbled. The luster of Hornfels is shiny while that of Aplite is dull to pearly to subvitreous. Hornfels is available in brown, dark greenish - grey, green, reddish brown colors whereas Aplite is available in black, grey, orange, pink, white colors. The commercial uses of Hornfels are cemetery markers, commemorative tablets, creating artwork and that of Aplite are curling, gemstone, laboratory bench tops, small sculptures, tombstones.