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