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