Know all about Marl and Diabase properties here. All properties of rocks are important as they define the type of rock and its application. Marl belongs to Sedimentary Rocks while Diabase belongs to Igneous Rocks.Texture of Marl is Earthy whereas that of Diabase is Aphanitic, Granular. Marl appears Rough and Dull and Diabase appears Vesicular. The luster of Marl is dull while that of Diabase is not available. Marl is available in beige, brown, green, grey, white colors whereas Diabase is available in dark grey to black colors. The commercial uses of Marl are creating artwork, soil conditioner and that of Diabase are an oil and gas reservoir, cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones.