There are complete societies built around fluorescence in minerals and crystals. It is an active and seemingly popular hobby for many people, yet I somehow never knew of its existence. Do not understand me wrong, I did know some crystals and minerals fluoresce under the right excitation, just not that it is actually a big thing.
Since I have recently entered into the world of fluorescence photography, it just made sense that I tried my hand at our oldest relatives, The Rock.Below a composite of UV-A, UV-B and UV-C excitation in some samples I recently acquired. Normal white light illuminated below And lastly an identification legend.