Christopher Stuart Cast Stone, Ltd. is proud to announce we have been through the Cast Stone Institute Plant Certification process and are a Certified Producer Member of the Cast Stone Institute (CSI). TheCast Stone Institute is a highly selective organization where potential members go through a rigorous acceptance policy of product quality, safety, testing, and meticulous record-keeping. strict adherence to ASTM 1364 is examined and maintained on a weekly basis to ensure the best quality products are put into the market and made to last a lifetime. We are proud to be admitted as a member of this elite organization! www.caststone.org