Petra The Stone Atelier is an space in which three activities live together. On the one hand, it is an exhibition space for the company Stonehegen that shows stones from all over the world. The British cromlech that inspired the company serves as reference to trace the geometry of the place. A circular furniture inside which we can discover the different natural stones. In this way, the numerous shades of marble, quartzite... are not contaminated between them and can focus attention on the material that is observed. The space is apparently empty, neutral, white, where you can find hidden stones, some of them semiprecious. The materials are classified according to the chromatic range. In concentric form, as in neolithic construction, there is a comfortable meeting room completely upholstered in black. It also uses the local as an exhibition space, which shows the pieces of furniture developed with natural stone as its protagonist. The third use of space is to house some offices of the brand. Natural lighting is sifted through the skylights, and artificial lighting helps to read the geometry of the room that is drawn on the ceiling.