Cornerstone Granite & Quartz

Customer reviews for Cornerstone Granite indicate generally strong positive experiences with their countertop products and installation services. Potential customers highlight the excellent quality of the countertops, professional and efficient installation teams, and personable customer service staff. Reviews often mention granite and quartz as materials used, along with prompt service and good communication. However, one review did mention issues with measurement accuracy leading to a gap during installation as a potential concern.