Luis-Design (L= Living; U= Unique; I= Interior; S= Stone) We love to work with marble and granite. These materials have been used as architectural status symbols for millennia. Why should we change this approach today? Our team of designers and engineers was commissioned to create a complete set of furnishings made of granite or marble. It appears that we have made the impossible possible and designed all furnishings using these one-of-a-kind materials.