The Cassa Signature Grade Process begins in the quarry where we personally inspect and handpick only the highest grade of natural stone products. Our in-house stock includes a large number of imported slabs of Granite, Marble, and Travertine from diverse locales including Brazil, India, Italy, and Mexico. To ensure our customers' satisfaction we personally travel the world to bring only the finest natural stone products to the major architects, designers and homeowners throughout New England. Being a key leader in the stone industry, Cassa Stone is committed to one goal.to guarantee complete customer satisfaction.