This unmistakable pen by Visconti is certainly pleasing to the eyes. Its unique shape was inspired by the Golden Mean, also known as the Divine Ratio, which is 1,618. The striking pen in jet black lucite is detailed with 925 sterling silver. The design also references the Nautilus, hence the pen's spiral-shape. The Visconti Black Divina Pen is available in a large and midi fountain or rollerball sizes. Fountain pen features a 14k gold nib and fills via bottled ink only. The Black Divina is also offered in a regular ballpoint and 3.2mm sketch pencil.