Kaweco Dia2 Fountain Pen - Black/ChromeAbout Kaweco Dia2 Fountain Pen Black Chrome The Kaweco Dia2 fountain pen from Kaweco is a product that has stood the test of time having been around since the 1930's when it was the jewel of the range and apparently derived its name from the precious stone Diamond! This is a classic range of writing systems that is perfectly balanced, has a high gloss black finish, all metal parts with polished chrome plating and the usual Kaweco decal and retro style