Fluorescent minerals

Fluorescent minerals emit visible light when exposed to ultraviolet radiation. The effect comes from trace activator ions in the crystal lattice — manganese, uranium, rare earths — and the response often differs between short-wave and long-wave UV. Many are unremarkable in daylight and dazzling under a UV lamp.

Showing 361–377 of 377 fluorescent minerals (page 4 of 4).