Know all about Lignite and Gneiss properties here. All properties of rocks are important as they define the type of rock and its application. Lignite belongs to Sedimentary Rocks while Gneiss belongs to Metamorphic Rocks.Texture of Lignite is Amorphous, Glassy whereas that of Gneiss is Banded, Foliated, Platy. Lignite appears Veined or Pebbled and Gneiss appears Foliated. The luster of Lignite is dull to vitreous to submetallic while that of Gneiss is dull. Lignite is available in black, brown, dark brown, grey, light to dark grey colors whereas Gneiss is available in black, brown, pink, red, white colors. The commercial uses of Lignite are electricity generation and that of Gneiss are cemetery markers, jewelry, tombstones, used in aquariums.