The Silver Crucifix is an important items in the world of Titan.
Taking into account that Christianity does not apparently exist on Titan, their origin is somewhat mysterious. It is possible that Christianity does, or once did, exist secretly, giving rise to these symbols. It is also possible that they represent an unknown god, goodness itself, Ashra or even Arn. They have been found in Firetop Mountain in Allansia and Lupravia in the Old World.