'On the Revolutions of the Celestial Spheres' is the title of the most revolutionary and transgressive book in history. Written by Copernicus in the 16th century, it collects his studies and scientific theories to prove that the Earth was not the center of the Universe. The center of this piece is a sphere of natural stone around which circles that represent the orbits of celestial bodies rotate. The rings turn on themselves so it is a piece with movement that takes a little inspiration from the old gyroscopes. The piece measures 4cm and has a natural stone in the center. The chain is 71cm long. The entire necklace is made of nickel and lead free brass and finished with 18kt gold plating. The production of this piece takes place between Barcelona and our small workshop in La Garrotxa (Girona). aquamarine (light blue) moonstone (white) Labradorite (gray) Aventurine crystal (dark blue with sparkles) matte rhodonite (pale pink to garnet tone)