Know all about Trachyandesite and Gabbro properties here. All properties of rocks are important as they define the type of rock and its application. Trachyandesite and Gabbro belong to Igneous Rocks.Texture of Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Gabbro is Phaneritic. Trachyandesite appears Dull and Soft and Gabbro appears Veined and Shiny. The luster of Trachyandesite is earthy while that of Gabbro is not available. Trachyandesite is available in black, brown, light to dark grey colors whereas Gabbro is available in dark grey to black colors. The commercial uses of Trachyandesite are creating artwork, pottery and that of Gabbro are cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones.