Many Neopagans, especially Wiccans, use the pentagram as a symbol to the four elements with the addition of Spirit as the uppermost point. The outer circle of the circumscribed pentagram is sometimes interpreted as s a symbol of  unity, wholeness, infinity, the goddess, and protection binding the elements together and bringing them into harmony with each other. Sometimes it is worn with an added symbol or image to symbolize a spirit guide, totem animal or personal core belief

Triple Goddess (Neopaganism), a universal, global, "Great Goddess" who is threefold; sometimes a single goddess as maiden, matron and crone; and sometimes three sisters - sometimes refers to historical goddess triads and single goddesses of three forms or aspects. The three visible phases of the Moon are often used to symbolize this triad.
The Sun/Moon symbol has been used in many cultures to represent the union of the duality of Sun/Moon, male/female, day night - balance of the universe and inner self