Colorful earrings

Preloved I’m not sure what brand these are. I believe they are costume jewelry there’s some markings on the back of them but I don’t believe it is gold or silver. Please reach out with any questions or if you know the brand of these earrings please comment below would really appreciate the help if you know :) If you are looking for free people items, I have quite a bit in my closet. Please feel free to look around. :-D