Tiferet (Beauty) (also translated as "glory") is a balancing force between Hesed and Gevurah. It is, in fact, considered their offspring. This balancing force is essential to the proper running of the universe. Tiferet is considered the primary "male" attribute of God. (In some versions of the sefirot this attribute is called Rahamim [Mercy].)
The Kabbalists devised an image to show how the sefirot acted upon each other. It is supposed to represent a tree, with Tiferet located right in the center:
Often associated with the Written Torah, Tiferet corresponds to the Tetragrammaton itself (YHVH: the unpronouncable name of God); but spoken as Adonai or "The Holy One, Blessed be He." As the primary male attribute of God, Tiferet is seen as the bridegroom who seeks to be united with Shekhinah, the primary female attribute of God. When these two aspects are united, they produce the human soul.
Tiferet corresponds to the torso or spine on the human body, and is also symbolically represented as the Sun. Its color is purple.