If you love the luxurious look that only comes from inviting natural stone into your home, you'll love these gorgeous Boutique Natural Limestone Tiles. They have subtle shell fossiling and a characterful tumbled surface. This is where the cut limestone is put into a drum with water, sand and other rocks, and then rotated. The abrasiveness of the other materials will naturally smooth down the surface and softly chip and distress the edge to make them more rounded and antique looking.