Know all about Marble and Coal properties here. All properties of rocks are important as they define the type of rock and its application. Marble belongs to Metamorphic Rocks while Coal belongs to Sedimentary Rocks.Texture of Marble is Granular whereas that of Coal is Amorphous, Glassy. Marble appears Veined and Shiny and Coal appears Veined or Pebbled. The luster of Marble is dull to pearly to subvitreous while that of Coal is dull to vitreous to submetallic. Marble is available in black, blue, brown, grey, pink, white colors whereas Coal is available in black, brown, dark brown, grey, light to dark grey colors. The commercial uses of Marble are cemetery markers, commemorative tablets, creating artwork, curling, laboratory bench tops, paper industry, tombstones, used in aquariums, whiting material in toothpaste, paint and paper and that of Coal are alumina refineries, electricity generation, liquid fuel, manufacture of soap, solvents, dyes, plastics and fibres, paper industry.