Is Nordic Black Granite (http://tanbrown.org) from Canada well suited for kitchen Counter (http://GialloFiorito.com) tops? Will it stain easily...if so, what types of substances? Lastly, there appear to be rough areas (small) scattered throughout the Slabs (http://www.VerdeUbatuba.com) . Is this normal that the entire slab doesn't come to a bright shine?