4. what else should I put attention to when buying granit countertops?

You should think about how you are going to get it installed. Blatent
Plug: I work on a companies website putting their articles and
informational How-To Guides online. They have one on all the ins and
outs of stone countertops from a toxicity standpoint.

If you are interested, check them out at: http://www.SaferBuilding.com