Skulls medium - Yooperlite

‘Yooperlite’ is actually a trademarked brand of what is officially known as a “syenite rock rich with fluorescent sodalite”. But if you’re unsure of what exactly it is we’re talking about here, a ‘Yooperlite’, in short, is a special kind of fluorescent rock that you can find predominantly along the shores of Lake Superior that, as the trademarked name suggests, can glow when subjected to specific lighting conditions. 

Each skull measures approx. 3" x 2.3"