Copper and turquoise-effect SS earrings

Worn once or twice, purchased from a local artist in 2022. I’m relatively sure the posts, backs, and circle part are sterling silver. The rest of the parts are mystery metals and materials, but the look suggests copper and turquoise. I paid over $100 (I’m a trusting person) and think they’re worth (resale) $50 tops. Make me an offer.