I have a question for those more knowledgeable about tourmalines. When I hear about glow it's always in reference to blue-green colors. Do pinks ever glow? I recently inherited an old pink tourmaline ring (90+ years give or take). It's a pretty purpleish-pink but frequently I catch it lighting up like I have a pink LED on my hand. I don't see anything special in the cut that would be catching extra light, but I'm not great at discerning subtle differences. My best guess would be that it came from one of the mines in Maine as the family lived in the general area of the mines when it came into the family.