Celtic Trinity Knot Silver Triquetra Earrings TER150Celtic Trinity Knot Silver Triquetra Earrings TER150 The Triquetra is an ancient Celtic symbol that speaks of the power of three in all things: earth, sea, and sky, birth, death, and rebirth, and the maiden, mother, and crone aspects of the Goddess, as well as past, present, and future. It is one of the simplest, yet most profound, of the various Celtic Knots. Gracefully trailing triquetras and beads, these Peter Stone sterling silver Triquetra