Description Nova Marfil 12x12 Polished Marble Tile. $3.99 sq ft Each natural stone is a little different with variations. All Natural Stone products such as granite, marble, etc. are a product of nature and have color, shade, density, and veining variation. When installing, it is recommended to mix tiles from different boxes. All natural stone products should be sealed with a penetrating sealer and maintained with product appropriate cleaners.