Hand-turned on one of my wood lathes, the body of this Statesman fountain pen is composed of pulverized stone that is reconstituted with brass veining embedded. It's extremely hard and is the heaviest of an of the pens I produce. It uses either ink cartridges or bottled ink. This style is the largest and finest of the Statesman/Gentleman's fountain pen and rollerball family, featuring platimum and gold platings on all the metal parts. The wood and metal finishes are guaranteed for life.