This is a Brood 14 species of Cicada shell cast in resin with red jewels for eyes between evil eye beads. These are treated like beads, wrapping all the way around the neck.
Fun Fact: These cicadas emerge every 17 years in the Eastern United States
Want to learn more about the bug you're wearing?:
Check This:
https://naturalhistory.si.edu/education/teaching-resources/life-science/periodical-cicadas#:~:text=Periodical%20cicadas%20are%20insects%20that,the%20sides%20of%20their%20bodies.
What's an Evil Eye?
Check this:
https://www.bbc.com/culture/article/20180216-the-strange-power-of-the-evil-eye