Pewter Celtic Chokers in Mystery of Ireland design on black adjustable full length cord. Legend: Our unique Mystery of Ireland design includes the 5 best known symbols of Irish heritage: The Harp: the harp is the oldest official symbol of Ireland. Shamrock: the shamrock was used by Saint Patrick to explain the Holy Trinity. Claddagh: the heart symbolising love, hands for friendship & crown for loyalty. Spiral: the spiral represents the Newgrange tomb, the spiral symbol is our connection to the past. Triple Knot: the trinity or triple knot symbolises eternity and continuity.