Yooperlite

Yooperlites are fluorescent sodalite-bearing syenite rocks found along Lake Superior's shores, particularly in Michigan's Upper Peninsula, that glow orange, red, or yellow under UV light. Discovered in 2017/2018, these igneous rocks are collected as hobbyist souvenirs, used for jewelry, and in spiritual healing. They are not considered rare, though prime, highly fluorescent specimens are sought after.