Know all about Gabbro and Arkose properties here. All properties of rocks are important as they define the type of rock and its application. Gabbro belongs to Igneous Rocks while Arkose belongs to Sedimentary Rocks.Texture of Gabbro is Phaneritic whereas that of Arkose is Clastic. Gabbro appears Veined and Shiny and Arkose appears Rough and Dull. The luster of Gabbro is not available while that of Arkose is dull. Gabbro is available in dark grey to black colors whereas Arkose is available in reddish brown colors. The commercial uses of Gabbro are cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones and that of Arkose are in aquifers, soil conditioner, source of magnesia (mgo), tombstones.