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