A stone that can add a new dimension to the buildings in the contemporary world of interior designing, Mac rustic slate exhibits splashes of brown on the marvelous green background. autumn rustic slate ideal for roofing, flooring, driveways, fireplaces, windowsills and other stone items. These stones are ideal for both exterior and interior applications such as roofing, flooring, wall cladding, paving, etc. The high compressive strength makes the stone ideal for paving on high traffic zones.