Granite & Marble Precision (GMP) has been serving Chicagoland for many years. We provide custom granite countertops. At GMP, we help you achieve the entire product. Many people do not know a lot about granite, so we are here to help! We will help all the way from the planning to the installation. Our granite, marble, and quartz products are classy, sophisticated, and offered at highly affordable rates. Kitchen granite countertops can be a real showstopper, and bathrooms are another wonderful location for a granite counter.