Know all about Blueschist and Coal properties here. All properties of rocks are important as they define the type of rock and its application. Blueschist belongs to Metamorphic Rocks while Coal belongs to Sedimentary Rocks.Texture of Blueschist is Foliated whereas that of Coal is Amorphous, Glassy. Blueschist appears Dull and Banded and Coal appears Veined or Pebbled. The luster of Blueschist is dull while that of Coal is dull to vitreous to submetallic. Blueschist is available in blue, bluish - grey, purple, shades of blue colors whereas Coal is available in black, brown, dark brown, grey, light to dark grey colors. The commercial uses of Blueschist are cemetery markers, commemorative tablets, creating artwork, curling, tombstones and that of Coal are alumina refineries, electricity generation, liquid fuel, manufacture of soap, solvents, dyes, plastics and fibres, paper industry.