Sorry that was an autocorrect. My question was, if you see a bi-or tri-colored tourmalines, can you assume that they were not irradiated since they retained their different color are different sides of the crystal?
I'm sure Amguy will correct me if I'm wrong but I'm pretty certain that irradiation of tourmaline is permanent and stable (i.e no fading).
Amguy - one of those parcels look like cut rhubarb and good enough to eat. I REALLY love the ones where you can see not only pink but also some coral colour (or is that just lighting in the photos)? 4th/8th and 10th photos.