Know all about Gabbro and Pseudotachylite properties here. All properties of rocks are important as they define the type of rock and its application. Gabbro belongs to Igneous Rocks while Pseudotachylite belongs to Metamorphic Rocks.Texture of Gabbro is Phaneritic whereas that of Pseudotachylite is Quench. Gabbro appears Veined and Shiny and Pseudotachylite appears Dull and Soft. The luster of Gabbro is not available while that of Pseudotachylite is vitreous. Gabbro is available in dark grey to black colors whereas Pseudotachylite is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Gabbro are cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones and that of Pseudotachylite are creating artwork, gemstone.