Huge Mexican Clip-On Earrings

This is a pair of earrings I bought last week. They are unmarked but I believe they are Mexican. I found similar ones on the Internet, and most of them were marked 925 and Mexico. Mine are not and therefore I am listing them as costume jewelry.
These earrings are probably the largest I have ever found (almost 2 inches), and they are too big, even for me. I am thinking of using them as a pin and a pendant. I don’t think it should be too hard to convert them.

Thanks for looking:)