Know all about Conglomerate and Coal properties here. All properties of rocks are important as they define the type of rock and its application. Conglomerate and Coal belong to Sedimentary Rocks.Texture of Conglomerate is Clastic whereas that of Coal is Amorphous, Glassy. Conglomerate appears Shiny and Rounded and Coal appears Veined or Pebbled. The luster of Conglomerate is dull while that of Coal is dull to vitreous to submetallic. Conglomerate is available in beige, black, brown, buff, light to dark grey, orange, rust, white, yellow colors whereas Coal is available in black, brown, dark brown, grey, light to dark grey colors. The commercial uses of Conglomerate are cemetery markers, in aquifers, tombstones and that of Coal are alumina refineries, electricity generation, liquid fuel, manufacture of soap, solvents, dyes, plastics and fibres, paper industry.