Know all about Diabase and Hornfels properties here. All properties of rocks are important as they define the type of rock and its application. Diabase belongs to Igneous Rocks while Hornfels belongs to Metamorphic Rocks.Texture of Diabase is Aphanitic, Granular whereas that of Hornfels is Granular, Platy. Diabase appears Vesicular and Hornfels appears Dull. The luster of Diabase is not available while that of Hornfels is shiny. Diabase is available in dark grey to black colors whereas Hornfels is available in brown, dark greenish - grey, green, reddish brown colors. The commercial uses of Diabase are an oil and gas reservoir, cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones and that of Hornfels are cemetery markers, commemorative tablets, creating artwork.