Kallone (Greek Καλλονή "beauty") is one third of the Greek trio of gods comprising Fate, Birth and Beauty; or Moira, Eileithyia and Kallone respectively. She is described in Plato's Symposium as an aspect of birth:
This thing, pregnancy and bringing to birth, is divine, and it is immortal in the animal that is mortal. It is impossible for this to happen in the unfitting; and the ugly is unfitting with everything divine, but the beautiful is fitting. So Kallone is the Moira and Eileithyia for birth.She is described by mythologist Seth Benardete as a cult name for Artemis-Hecate.
References
Kallone Wikipedia(Text) CC BY-SA