KC 18” Necklace and earrings Peridot Vintage

I’ve had this set for quite a few years so I guess that makes it vintage? It is a beautiful peridot color and the silver really sets it off. They are marked KC on the back. There might be some wear to the silver or it might just need a good cleaning. The lobster clasp to the necklace and the backing to the pierced earrings are a little tarnished. See pictures.