Plane Line introduces a marble mosaic that use “natural split” Ardesia Nera , worked at the back to obtain calibrated thickness. The result is a product with a rough surface, capable of enhancing the qualities of the natural stone. This Ardesia Nera line is made of 7 designs deriving by the parallel alignment of 1.5×10 – 1.5×15 – 1.5×30 – 2.3×10 e 2.3×15 cm. slats. The slats are calibrated at 10 mm and grid-mounted in 29,8×29,8 cm. sized modules.