This is commonly known as a Goddess symbol, because in Wiccan theology the moon is representative of the Goddess’s power. The waxing crescent (left) symbolizes the Goddess’s transition from the status of Maiden to Mother (the full moon, the center circle.) The Waning moon (right) symbolizes the transition from Mother to Death; known as The Crone stage. From left to right we have the three forms represented in this way: the “Maiden” by the ) crescent, the “Mother” by the O full moon, and the “Crone” by the ( crescent.