2 for $15 ⭐️ Vintage funky layered earrings

Vintage but not sure from when; mostly likely '80s or '90s. See photo for size in centimeters. Post piercing, not dangle. Some slight green/discoloration near the earring post, though item has been cleaned to the best of my ability (but please keep in mind I am not a jewelry professional). I'm not sure what the white stone at the top is.