Clastic, Granular, Phaneritic, Porphyritic
Granular, Poikiloblastic
Black to Grey, Bluish - Grey, Dark Greenish - Grey, Green, Light Greenish Grey
Black, Brown, Colourless, Green, Grey, Pink, White
Layered, Banded, Veined and Shiny
Dull, Banded and Foilated