Abbey Carpet by Fashion Floors Is Proud To Be Diamond Certified. The Diamond Certified Resource is a rigorous 12-step company certification process which ensures the highest in customer service and satisfaction. Unlike other review measures, Diamond Certification is backed by real customer data. Companies must score Highest in Quality and Helpful Expertise® (a 90+ on a 100 scale) and pass all credential-based ratings to earn Diamond Certified. Once earned, companies are then monitored on an ongoing basis to ensure that they maintain high performances.