The ball has four different colored sections that you can see when you zoom in on it. If you paid attention while you were in J'nanin, you should be able to figure out how much this ball weighs, which might help in solving the lever puzzle. If you did not find out about the weighted materials, you can either use the trial and error method, or go back to J'nanin; the latter can be done by going to the "easy" linking book, back by where you first entered Amateria.