Hi I have had this tourmaline for many years from Anakie region qld. I have recently sliced a specimen off the hardest part of rock and shows blotchy orange spots through dark stone if looking 100x through microscope, I would like to know why it has a rainbow halo on outer edge of stone when...
I have previously posted about this blue gem but I had very flat batteries in UV torch. Previously chalky green ONLY in fluorescence, maybe that was SW not sure.
I bought stronger batteries for my UV wavelength-390-395 handheld light to take these photos in TOTAL darkness with UV only light...
I have just noticed with my loupe it has a residue film on top I scratched some away with finger nail but took a while,
Is there a way to get this off, as it looks pretty smooth underneath...possible??
Salt build up?
Also looks very clear inside.