Description Limestone is the most abundant sedimentary stone. Unfortunately, limestone is a very soft stone, easily disolved by anything acidic. Proline can give you the natural look of Limestone without the problems. With our stamping system, you can enjoy the beauty of Limestone with the durability and low cost of concrete. Seamless textures, an original design of Proline, allows for a flowing pattern free of grout lines for easy care. Add any of our Border Art Tools or Band Tools, for a truly unique design. Try the new Super Skins version! Additionally, we offer the Seamless Limestone Package that includes the Proline Recommended Seamless Skins for your project in various sizes at a package savings.