Know all about Lignite and Peridotite properties here. All properties of rocks are important as they define the type of rock and its application. Lignite belongs to Sedimentary Rocks while Peridotite belongs to Igneous Rocks.Texture of Lignite is Amorphous, Glassy whereas that of Peridotite is Phaneritic. Lignite appears Veined or Pebbled and Peridotite appears Rough and Shiny. The luster of Lignite is dull to vitreous to submetallic while that of Peridotite is shiny. Lignite is available in black, brown, dark brown, grey, light to dark grey colors whereas Peridotite is available in dark greenish - grey colors. The commercial uses of Lignite are electricity generation and that of Peridotite are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds.