Premium Yooperlite pendant #1 made by Casey Cameron from northern edge designs in Cadillac Michigan using Yooperlite stones.
Yooperlites are Syenites rich in flourescent Sodalite found in Michigan on Lake Superior.
They flouresce (glow) using longwave 365nm uv lights. Pics taken using a Convoy S2+UV nichia 365nm with filter. You must use longwave (black light) if to see the fluorescence (glow).