Know all about Lignite and Blue Granite properties here. All properties of rocks are important as they define the type of rock and its application. Lignite belongs to Sedimentary Rocks while Blue Granite belongs to Igneous Rocks.Texture of Lignite is Amorphous, Glassy whereas that of Blue Granite is Phaneritic. Lignite appears Veined or Pebbled and Blue Granite appears Shiny. The luster of Lignite is dull to vitreous to submetallic while that of Blue Granite is subvitreous to dull. Lignite is available in black, brown, dark brown, grey, light to dark grey colors whereas Blue Granite is available in black, brown, light to dark grey, white colors. The commercial uses of Lignite are electricity generation and that of Blue Granite are cemetery markers, commemorative tablets, creating artwork, curling.