Hand-turned on one of my wood lathes, the barrels of this pen are composed of pearlized dark forest green acrylic.
The Diplomat model is one of my most popular pen styles. I elected a long time ago to use only the finest materials for the writing instruments I create. So, the metal parts on nearly all my pens are plated with expensive platinum and black titanium and the mechanical parts are the most durable and dependable I can find. No finish is needed on acrylic pens; they are polished to a high gloss while still spinning on the lathe.