" Now fair and marvellous was that vessel made, and it was filled with a wavering flame, pure and bright; and Earendil the Mariner sat at the helm, glistening with dust of elven-gems, and the Silmaril was bound upon his brow. Far he journeyed in that ship, even into the starless voids; but most often was he seen at morning or at evening, glimmering in sunrise or sunset, as he came back to Valinor from voyages beyond the confines of the world. "

― J.R.R. Tolkien , The Silmarillion