So, I am a blacklight artist, and as with most things, blue and purple are ALWAYS the hardest to get. I’ve finally discovered pigments that do fluoresce blue, but I cannot figure out what mineral it is. I am honestly a little worried it may be a mildly toxic material. Do you know of any minerals that are blue in natural light and UV light?
How can you explain this mineralogically? The chromium in red spinel causes its fluorescence. Natural blue spinel should be colored by iron and this not fluoresce? I am trying to to identify a blue stone myself, it appears natural but it fluoresces so I thought synthetic
