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