Materials are used for crafting weapons by presenting specific materials to Cu Sith. Each type of material is divided into three classes: Low, Medium, and High. When used for crafting of weapons, higher class materials increase stats more as when compared to lower class materials. Materials can also be bought and sold from Llyud's Material Shop in the Sky Saloon and more materials will become available as the story progresses. However, rare High-class materials such as Rubies cannot be bought here and must be scavenged from specific places.