Prefabricated elliptical staircase of reinforced concrete clad in wooden-type Veined Rainbow Stone. The indoor staircase is attached on a plastered straight wall, but the verticality of the steps that make the screwed line to draw an ellipse gives character to the living space and gives a sense of movement to the entire architectural structure. The self-supporting steps have a facing of the stone whose finish is reminiscent of the wood grain. The warm brown color, in harmony with the wall color serves as background to the elliptical staircase, reminiscent of wood and helps to give strength to the modern style of the structure. The materials and assembly techniques are of the high quality and trendy.