Large-size marble-effect slabs in porcelain stoneware. Calacatta Extra by Atlas Plan is characterized by a compact, luminous white ground, with striking grey veining and gold reflections. A marble effect that goes perfectly with both classic and modern interiors, also making it easy to pair with any other materials and effects. The white colour and subtle veining give the porcelain stoneware slab an elegant, refined character. Available in various sizes, finishes and thicknesses meaning that it can be applied in a continuous fashion to any surface, for a visually uniform result.