Camino de Santiago pendent that has a shell on the front, and "Camino de Santiago" engraved on the back. Comes with a black cord. Pendent is slightly larger than a 50 euro cent coin, about 25mm.
While commuting home from work I saw a pilgrim taking a break by the Danube, I quickly put my bike brakes on, jumped off the bike and had a chat. I have definitely turned into a Camino nut.