The twisting nautilus shape of this pen is influenced by the mathematical principles of the Fibonacci Spiral, while the cap is proportioned to the length of the entire pen in keeping with Da Vinci's Golden Ratio. The pentagram shape of the end cap, meanwhile, is inspired by the Five Elements of air, water, earth, fire, and spirit.

While the design of this pen is infused with mystery and symbolism, this is also an eminently practical everyday writing instrument - the pen fills using Visconti's reliable piston-fill system, allowing for the use of any bottled fountain pen ink, and is provided with your choice of nib in a variety of tipping sizes.

As with any pen you purchase from us, this pen qualifies for our complimentary nib tuning services, which help ensure that your pen will be a terrific everyday writer from the moment it arrives. The 23k palladium nibs also serve as excellent starting points for many of our exclusive nib customizations, which add distinctiveness to your writing on the page and can also make this pen a valuable tool for the professional or amateur calligrapher.