Know all about Diabase and Slate properties here. All properties of rocks are important as they define the type of rock and its application. Diabase belongs to Igneous Rocks while Slate belongs to Metamorphic Rocks.Texture of Diabase is Aphanitic, Granular whereas that of Slate is Foliated. Diabase appears Vesicular and Slate appears Dull. The luster of Diabase is not available while that of Slate is dull. Diabase is available in dark grey to black colors whereas Slate is available in black, brown, buff, green, light to dark grey, purple, red, shades of blue 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 Slate are blackboards, commemorative tablets, laboratory bench tops, standard material for the bed of billiard table, standard material for the beds of pool and snooker table, tombstones, used in aquariums, writing slates.