Granite vs Coal - Compare Nature
Granite is available in black, grey, orange, pink, white colors whereas, Coal is available in black, brown, dark brown, grey, light to dark grey colors. Appearance of Granite is Veined or Pebbled and that of Coal is Veined or Pebbled. Properties of rock is another aspect for Granite vs Coal. The hardness of Granite is 6-7 and that of Coal is 1-1.5.