Vintage Jewelry

I've been meaning to post photos of this necklace and earring set for a while. It's at least 50 years old and may be as much as 60 years old. It was a gift from my father to my mother and I believe it was before I was born. She gave me the set at least 35 years ago and though I've never worn it, I've hauled it around with me since then. I don't really know much about it but I've always thought that it's beautiful. I'm not sure what the metal used in it is because it's as bright and beautiful as polished sterling silver but it's never tarnished. Anyone got any ideas?