Lava pens require complex processing. To create new colors Visconti mixed the lava material with the colored resin. An anti-stain treatment was then applied to prevent ink from depositing on the pen during the refilling phase.

The body is made of a virtually unbreakable mixture of resin and Lava powder treated to guarantee a particularly pleasant tactile sensation.

The combination of catalysed Mount Etna basaltic lava and resin is made according to a Visconti secret formula. It creates an unbreakable, moisture absorbing, and velvety material that has revolutionised the writing world.