Granite counter-tops, once all-the-rage, are now on their way out, which means this may be a mute point.
My understanding is quartz is a better choice if you are looking for a natural element.
http://greenbuildingelements.com/2009/02/02/hostile-granite-showrooms-refuse-to-discuss-radiation/#more-890
Recycling Roanoke one home at a time.