Triquetra copper offering bowl 3" diameter, $15. Sculpted of copper and accented with brass, this offering bowl displays the Triquetra. The Trinity Knot or triquetra was used to symbolize and honor the Mother, Maiden and Crone of the neo-pagan triple goddess. It signifies the three life-cycles of a woman in relation to the phases of the moon. In more recent times, it has come to be recognized as a symbol for 'The Father, The Son and The Holy Spirit'.