The Bio+16 fountain pen embraces a new "ecological" concept. After two years of research and development, Delta has created a fountain pen made of a sustainable organic protein.
 
This stunning fountain pen features several unique design elements including 16 concave facets on the cap and body that captures the light for mesmerizing reflections. The charm clip is milled from a solid piece of metal and both the clip and the nib feature beautiful floral engravings.
 
Why it's special:
Body and cap precision milled with 16 concave facets
Made from a unique, organic, and sustainable protein
Beautiful two-tone #6 JoWo steel nib with floral design
High capacity piston filling system
24-carat gold-plated metal clip made from milled from a solid bar
Handmade in Naples Italy by Delta
 
Detailed specs: 
Body material: Black organic protein 
Nib material: Steel
Trim: Metal - gold plated
Cap type: Threaded
Filling system: Piston filler (bottled ink sold separately) 
Postable: Yes 
Weight: 34 grams
Length: 139 mm / 5.5" capped, 123 mm / 4.8" uncapped, posted 159 mm / 6.3"
Diameter: 15.2 mm / 0.6" barrel, 12.7 / 0.5" mm section