Saruman's staff, in person, looked rather rough and "unpolished." The top looked to be made of painted resin. But like any prop, (unless it's a hero prop that is to be shot up close and in detail), there sometimes isn't a whole lot of finesse work done to items like this.
The sword, tho, looked to have been made by a proper blade/knife/sword shop or foundry. It was seen in closeup, in the film, so had to contain the detail and "presentation" ability.
