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