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