Know all about Gabbro and Gossan properties here. All properties of rocks are important as they define the type of rock and its application. Gabbro belongs to Igneous Rocks while Gossan belongs to Metamorphic Rocks.Texture of Gabbro is Phaneritic whereas that of Gossan is Rough, Sandy. Gabbro appears Veined and Shiny and Gossan appears Dull and Banded. The luster of Gabbro is not available while that of Gossan is metallic. Gabbro is available in dark grey to black colors whereas Gossan is available in brown, brown- black, gold, green, rust colors. The commercial uses of Gabbro are cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones and that of Gossan are cemetery markers, commemorative tablets, gemstone.