Know all about Travertine and Coal properties here. All properties of rocks are important as they define the type of rock and its application. Travertine and Coal belong to Sedimentary Rocks.Texture of Travertine is Banded whereas that of Coal is Amorphous, Glassy. Travertine appears Fibrous and Coal appears Veined or Pebbled. The luster of Travertine is dull to pearly while that of Coal is dull to vitreous to submetallic. Travertine is available in beige, black, blue, brown, grey, red, white, yellow colors whereas Coal is available in black, brown, dark brown, grey, light to dark grey colors. The commercial uses of Travertine are cemetery markers, creating artwork, gemstone, jewelry, paper industry, pottery and that of Coal are alumina refineries, electricity generation, liquid fuel, manufacture of soap, solvents, dyes, plastics and fibres, paper industry.