At the Rochester Mineralogical Symposium in 2022 Madeline Murchland gave a very nice presentation about fluorescence spectroscopy and zoning in apatite. Here is a recording of her talk.
“Black Rose” Fluorite: Fluorescence will ultimately fade to a dim blue after long exposure to LW
There have been several posts i our FB group lately about this fluorite listed on eBay as "Black Rose" from China sellers. Specific...