Neodymium (neodytrium)

He then told them many remarkable stories, sometimes half as if speaking to himself, sometimes looking at them suddenly with a bright blue eye under his deep brows. Often his voice would turn to song, and he would get out of his chair and dance about. He told them tales of bees and flowers, the ways of trees, and the strange creatures of the Forest, about the evil things and good things, things friendly and things unfriendly, cruel things and kind things, and secrets hidden under brambles.