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