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