The pen is faceted with eight sides like the baptistery of Florence. The shape is made following the rules of Divine Proportion , codified from Leonardo da Vinci under the egemony of the Medici family. Unique is also the material, another innovation from Visconti; Acrosilk. , that is a compound of Acrylic resin and Silk fibers. The result is a fantastic glossy and luminescent effect with the deepness of colors of the antique celluloid. The wooden color used it is a conscious choice and a tribute to the ancient luxury materials used in the princely Medici mansions. All the metal parts are in solid sterling silver, the ring is finally chiseled with the Symbol of the Medici family.