Know all about Diabase and Skarn properties here. All properties of rocks are important as they define the type of rock and its application. Diabase belongs to Igneous Rocks while Skarn belongs to Metamorphic Rocks.Texture of Diabase is Aphanitic, Granular whereas that of Skarn is Earthy, Mud-rich, Rough. Diabase appears Vesicular and Skarn appears Dull. The luster of Diabase is not available while that of Skarn is waxy and dull. Diabase is available in dark grey to black colors whereas Skarn is available in black, brown, colourless, green, grey, white 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 Skarn are creating artwork, gemstone, jewelry, metallurgical flux, source of magnesia (mgo).