These arent cloisonne - the technique is different.
Cloisonne technique involves compartments outlined with wire shapes where the cells are then filled with ground up enamel powder and fused, but the pendants you show resemble another technique where the surface of the metal has been carved away to create hollows then filled with enamel powder and fired. It is less fragile when fired than the cloisonne that we have been discussing.
These pendant shapes might have come from Ethiopia for example or from further east- pakistan or afghanistan for instance?