Foglia – The Vitality of Nature in Every Stroke. The Foglia fountain pen from Leonardo Officina Italiana brings the lush vibrancy of green leaves into your writing experience. Vivid green hues intertwine with warm brown tones, evoking the natural harmony of foliage and branches in perfect balance. Like Onda Blue, it features a transparent ink window and a fully integrated piston-filling system with 1.5ml capacity, precision-engineered in the Leonardo workshops. Foglia is a tribute to growth, nature, and renewal—crafted for those who find inspiration in every breath of green around them.