Sterling Silver Irish Celtic Cross Pendant by Astra Jewelry Beautifully Crafted Sterling Silver Irish Celtic Cross 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. This pendant is presented on a 16" chain. Elegantly presented in a Gift Bag - A perfect gift for any occasion. Designed in Ireland and delivered from Ireland to the US within 6-9 Days plus free Irish gift with every purchase.