Triquetra is made up of three interlocking petals, or Vesica Pisces, an old yonic sign for the Goddess. As a Wiccan symbol, it represents the Goddess’s three aspects: maiden, mother, and crone. It’s also meant to symbolize the three planes of existence: intellect, body, and soul or spirit. The three domains of sea, earth, and sky are another concept that Triquetra is thought to represent.