Know all about Diabase and Argillite properties here. All properties of rocks are important as they define the type of rock and its application. Diabase belongs to Igneous Rocks while Argillite belongs to Sedimentary Rocks.Texture of Diabase is Aphanitic, Granular whereas that of Argillite is Clastic, Polished. Diabase appears Vesicular and Argillite appears Rough and Dull. The luster of Diabase is not available while that of Argillite is waxy and dull. Diabase is available in dark grey to black colors whereas Argillite is available in dark grey to black, pink, red, 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 Argillite are fire resistant, used to manufracture paperweights and bookends.