Normally thought of as something done with weapons I thought with the gilding system it could be applies to all peaces of gear/clothing. Past being a mark of skill of the smith ect... (so it could have there name added to it or a name of there wish). The item would gain another gilding spot or some random but fitting bonus.
This would also add the possibility of rare components that can be added into the game to allow master work items if it needs to go that direction.