Sterling Silver Celtic Irish Trinity Knot Pendant by Astra This Stunning Irish Celtic Sterling Silver Trinity Knot Pendant. Made by the renowned Astra. Astra are a sterling silver jewelry company based in Kilkenny since 1988 and have developed their range over a number of years. Features 3 small Trinity Knots within one large Trinity Knot. A beautiful Irish gift. Pendant measures 1 x 0.75 " and is presented on an 18" Sterling Silver Chain. Designed in Ireland and delivered from Ireland to the US plus free Irish gift with every purchase.