Delat Bio+16 Corallo Fountain Pen

The Delta BIO+16 Corallo Fountain Pen blends Italian artistry with modern sustainability, handcrafted from Delta’s innovative BIO+16 biobased resin—a next generation material derived from natural plant sources and polished to a deep, luminous coral red. Enriched with warm gold-plated trim and sculpted into Delta’s elegant Mediterranean silhouette, the Corallo color evokes the richness of volcanic coasts and the warm glow of Italian coral reefs. Designed for writers who appreciate performance as much as beauty, the BIO+16 features Delta’s smooth piston-filling system with an integrated ink window for effortless monitoring. Every pen is hand-assembled in Italy and offered with a full spectrum of nib options—steel nibs for everyday versatility, premium 14KT gold #6 nibs for elevated softness, and a commanding 14KT gold #8 nib for those who prefer maximum presence and line variation. Choices include Extra Fine, Fine, Medium, Broad, 1.1 Stub, 1.5 Stub, Flex Extra Fine, and Flex Fine, giving every writer the freedom to choose their perfect expression. Sustainable, luxurious, and unmistakably Italian, the BIO+16 Corallo Fountain Pen is a refined writing instrument for collectors, professionals, and gift-givers seeking an eco-conscious pen without compromising artistry, heritage, or the pleasure of writing.