Know all about Gabbro and Rhyodacite properties here. All properties of rocks are important as they define the type of rock and its application. Gabbro and Rhyodacite belong to Igneous Rocks.Texture of Gabbro is Phaneritic whereas that of Rhyodacite is Earthy. Gabbro appears Veined and Shiny and Rhyodacite appears Skeletal. The luster of Gabbro is not available while that of Rhyodacite is greasy to dull. Gabbro is available in dark grey to black colors whereas Rhyodacite is available in black to grey, dark greenish - grey colors. The commercial uses of Gabbro are cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones and that of Rhyodacite are cemetery markers, creating artwork.