Know all about Coal and Eclogite properties here. All properties of rocks are important as they define the type of rock and its application. Coal belongs to Sedimentary Rocks while Eclogite belongs to Metamorphic Rocks.Texture of Coal is Amorphous, Glassy whereas that of Eclogite is Earthy. Coal appears Veined or Pebbled and Eclogite appears Dull, Banded and Foilated. The luster of Coal is dull to vitreous to submetallic while that of Eclogite is subvitreous to dull. Coal is available in black, brown, dark brown, grey, light to dark grey colors whereas Eclogite is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Coal are alumina refineries, electricity generation, liquid fuel, manufacture of soap, solvents, dyes, plastics and fibres, paper industry and that of Eclogite are creating artwork, gemstone.