The Order of Fabrikators, one of the three Grisha orders. Materialki manipulate physical materials and wear purple kefta. They include Durasts (who work with solid matter, metals, textiles, and chemicals) and Alkemi (who work with gases and combustible materials). Fabrikators are essential to Ravka's military and economy, creating everything from weapons to medicines. They are often considered the least glamorous order but arguably the most practically useful.