Can anyone help me identify any information about this earring? My girlfriend lost the other one, and I’m trying to get her another of the same set or a different, but similar set.

From reverse image searching, etc. all I’ve came up with is onyx (or faux onyx) and maybe Celtic/inspired? Other terms AI told me to try searching didn’t yield consistent results. If it helps at all, she thinks she may have gotten it from a store that also sells crystal, etc.

TYIA!