The Nazgi-artha (Orc.Craft-Rings) were the orcish equivalent to guilds, where the Durbi-artha (Orc.Master-Craftsmen) organised.There were several Craft-Rings, each devoted to a different fine-art:
- Brusszali - Brewers
- Fakhtkhali - Butchers
- Hûrghâshlui - Firemakers or Smelters
- Iak-Thrakali - Painbringers or Torturers
- Khangarali - Armourers
- Mukhardari - Stoneshapers or Masons
- Ong-Krimparali - Ironbinders or Forgers
- Tuzantû-wobi - Foresighted-ones (Engineers and Architects)
- Woraklui - Weaponmakers