Blue Granite 6" x 6" Porcelain Pool TileWaterline Pool Tile The ageless elegance of natural stone is modeled on this collection because of its finely blended indistinct patterns to create a vintage appeal of various concepts for any type of application. These tiles are suitable for swimming pools, spas, and not only meet but also exceed the standards for residential applications, including kitchen wall backsplashes, showers, and bathrooms.