Add an original touch to your bathroom with this grey square marble basin. Marble, is a metamorphic rock resulting from the transformation of a limestone heated by magma. As with all stones, millions of years are necessary for its formation. The purity of the marble depends on the diversity of colors and the color palette, which generally varies from white to black, through green, red, in ribbed or cloudy aspects, in "marbling" (due to metal oxides), even variegated. Very resistant, each marble basin or sink is unique in its ribbing. Marble is also a stone that can be combined with many other materials such as wood, glass or granite to create personalized atmospheres.