Know all about Diabase and Greywacke properties here. All properties of rocks are important as they define the type of rock and its application. Diabase belongs to Igneous Rocks while Greywacke belongs to Sedimentary Rocks.Texture of Diabase is Aphanitic, Granular whereas that of Greywacke is Clastic. Diabase appears Vesicular and Greywacke appears Dull. The luster of Diabase is not available while that of Greywacke is dull. Diabase is available in dark grey to black colors whereas Greywacke is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow 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 Greywacke are as armour rock for sea walls, petroleum reservoirs, sea defence, tombstones.