Origins of my grandmothers pendant

My grandmother was born in 1900 and died in 1970. She was apparently fond of copper. Would love to know how old these pieces are, or even where she got them. I wear the one with the red stone always. She died when i was very young and my mother doesn't have any info on the jewelry. She also spent her whole life in germany if that helps.

Thankyou,

Conny E.