Know all about Pumice and Coal properties here. All properties of rocks are important as they define the type of rock and its application. Pumice belongs to Igneous Rocks while Coal belongs to Sedimentary Rocks.Texture of Pumice is Vesicular whereas that of Coal is Amorphous, Glassy. Pumice appears Vesicular and Coal appears Veined or Pebbled. The luster of Pumice is earthy while that of Coal is dull to vitreous to submetallic. Pumice is available in beige, colourless, grey, light green, light grey, pink, white, yellow- grey colors whereas Coal is available in black, brown, dark brown, grey, light to dark grey colors. The commercial uses of Pumice are as a traction material on snow-covered roads, as an abrasive in pencil erasers, fine abrasive used for polishing, manufacture of soap, solvents, dyes, plastics and fibres, used in aquariums and that of Coal are alumina refineries, electricity generation, liquid fuel, manufacture of soap, solvents, dyes, plastics and fibres, paper industry.