Know all about Gabbro and Chert properties here. All properties of rocks are important as they define the type of rock and its application. Gabbro belongs to Igneous Rocks while Chert belongs to Sedimentary Rocks.Texture of Gabbro is Phaneritic whereas that of Chert is Banded, Rough. Gabbro appears Veined and Shiny and Chert appears Glassy or Pearly. The luster of Gabbro is not available while that of Chert is waxy and dull. Gabbro is available in dark grey to black colors whereas Chert is available in black, brown, green, grey, red, white colors. The commercial uses of Gabbro are cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones and that of Chert are creating artwork, gemstone, in fire-starting tools, jewelry, to ignite fire, used in flintlock firearms.