Know all about Novaculite and Coal properties here. All properties of rocks are important as they define the type of rock and its application. Novaculite and Coal belong to Sedimentary Rocks.Texture of Novaculite is Banded, Glassy, Rough, Vitreous whereas that of Coal is Amorphous, Glassy. Novaculite appears Glassy or Pearly and Coal appears Veined or Pebbled. The luster of Novaculite is waxy and dull while that of Coal is dull to vitreous to submetallic. Novaculite is available in black, brown, green, grey, red, white colors whereas Coal is available in black, brown, dark brown, grey, light to dark grey colors. The commercial uses of Novaculite are cemetery markers, gemstone, in aquifers, in fire-starting tools, jewelry, manufacture of tools, pebbles are used in ball mills to grind in ceramics industry, to determine the gold content of jewelry and that of Coal are alumina refineries, electricity generation, liquid fuel, manufacture of soap, solvents, dyes, plastics and fibres, paper industry.