This marcasite marble cross pendant has been created in Connemara marble, a unique stone dating back over 900 million years that’s known as “Ireland’s gemstone”. Our Connemara marble is authentic, coming from a family mine in Connemara itself. The Celtic Cross in this pendant is a powerful symbol of faith, dating back to the ninth century. This marcasite cross pendant features marcasite for that bit of sparkle, and has been hallmarked in Dublin Castle.