Proline Concrete Tools has introduced the Lorenzo stamp pattern. Conceptually designed by Andre Plouffe, of California-based decorative concrete company Designs in Concrete, for The Loren zo housing project near the University of Southern California, the Lorenzo pattern features stones of up to 40 inches. The stones are mostly rectangular and laid out in a linear pattern to give the pattern a unique look. It offers a very coarse travertine texture complete with veins for a natural feel. The Lorenzo stamps are 40 inches by 27 inches in size.