Aulë has might little less than Ulmo. His lordship is over all the substances of which Arda is made. In the beginning he wrought much in fellowship with Manwë and Ulmo; and the fashioning of all lands was his labour. He is a smith and a master of all crafts, and he delights in works of skill, however small, as much as in the mighty building of old. His are the gems that lie deep in the Earth and the gold that is fair in the hand, no less than the walls of the mountains and the basins of the sea. The Noldor learned most of him, and he was ever their friend. Melkor was jealous of him, for Aulë was most like himself in thought and in powers; and there was long strife between them, in which Melkor ever marred or undid the works of Aulë, and Aulë grew weary in repairing the tumults and disorders of Melkor. Both, also, desired to make things of their own that should be new and unthought of by others, and delighted in the praise of their skill. But Aulë remained faithful to Eru and submitted all that he did to his will; and he did not envy the works of others, but sought and gave counsel. Whereas Melkor spent his spirit in envy and hate, until at last he could make nothing save in mockery of the thought of others, and all their works he destroyed if he could.

The spouse of Aulë is Yavanna, the Giver of Fruits. She is the lover of all things that grow in the earth, and all their countless forms she holds in her mind, from the trees like towers in forests long ago to the moss upon stones or the small and secret things in the mould. In reverence Yavanna is next to Varda among the Queens of the Valar. In the form of a woman she is tall, and robed in green; but at times she takes other shapes. Some there are who have seen her standing like a tree under heaven, crowned with the Sun; and from all its branches there spilled a golden dew upon the barren earth, and it grew green with corn; but the roots of the tree were in the waters of Ulmo, and the winds of Manwë spoke in its leaves. Kementári, Queen of the Earth, she is surnamed in the Eldarin tongue.