Cornerstone Granite & Quartz

Customer reviews for Cornerstone Granite and Quartz highlight predominantly positive experiences with their services, focusing on high-quality installations, professional and punctual crews, and friendly customer service representatives. The business specializes in installing countertops for various rooms including kitchens, bathrooms, and pantries, primarily using granite and quartz materials. One notable negative experience mentioned involves measurement errors during installation that caused a gap in an oven. There is no specific feedback regarding warranty offerings or maintenance tips.