Granite Mafia, also known as Cornerstone Granite, is a leading countertop supplier and installer in the Rogue Valley, offering a wide selection of granite, quartzite, and quartz. The business features a large inventory of full slabs of natural stone and smaller remnants for various projects. Customers appreciate the excellent prices and quality of installation services. Many reviews highlight positive experiences with the team, noting their professionalism and attention to detail during the installation process. Clients have praised the company for its smooth operations, from demolition to final installation, often remarking on how clean the workspace is left afterward. The staff, particularly one employee, has been recognized for their patience and kindness, even in challenging situations. Overall, Granite Mafia has established a strong reputation for delivering beautiful results and satisfying customer experiences, making it a highly recommended choice for anyone in need of new countertops.
Best in town they do every aspect of marble processing and installation. They sell remnants which most companies don't that can save you serious money.
August 2026
Awesome place! Professional and very easy to work with!
September 2025
Granite Mafia and their team did such a beautiful job on our countertops for our bar area! This was the icing on the cake for me in our basement remodel!
