Sodalite tumblestones (Fluorescent)

Fluorescent Sodalite tumblestones

Fluorescent Sodalite tumblestones from Namibia with an orangey-yellow fluorescence.

It is sometimes sold as 'Yooperlite', but this is a trademark for an American find of Syenite rich in fluorescent Sodalite.

The two grades given in this material don't refer to the blue colouration of the stones but rather the level of fluorescence displayed as some are significantly brighter than others.

I test these items with a 365nm Convoy flashlight.