Extreme Granite and Marble is a wholesaler, fabricator and installer of custom granite & marble countertops. We offer the lowest prices in town! Premium & Exotic granite. We will match any written quote. Visit our beautiful 21,000 square foot showroom and warehouse located in Troy, Michigan. FREE In-Home estimates, Design Consultation, Field Measurements, Fabrication, Professional Installation, Imported pieces and designs. Design Consultation. Professional Installation.