Sterling Silver Irish Trinity Knot Pendant by Astra Beautifully Crafted Sterling Silver Small 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. Hallmarked at the Assay Office in Dublin Castle, Ireland and presented in a gift bag. Pendant measures approx 1cm x 1cm and comes on a 16" chain. Designed in Ireland and delivered from Ireland within 6-9 Days - Free Irish gift with every purchase.