The story of copper and tourmaline is fascinating to me. Research indicated that copper acted as a chromophore (coloring agent) in tourmaline predated the discovery of commercial copper bearing tourmaline in Paraiba Brazil by many years. But it certainly was Paraiba that put the glory of cuprian tourmaline on the map. Paraiba produced many colors of tourmaline, but the only color that was truly valued was the cyan blue (windex) so many if not most of the Paraiba was heated to try and get that color. A lot of the heating was done to remove the reddish tone from the cyan blue and so the purples were destroyed.
I am not a heater and the collection is focused on the spectrum of natural colors, so the purples are safe with me. I have also found that copper and manganese produce in tourmaline exceptional purples, that I have not been able to find from any other chromophores. I have even found blue purples with cuprian, that fill the largest void in my color wheel of tourmaline.
Now this little tourmaline pastel violet probably does not have very much copper in it (I discovered that it contained copper by using my spectrometer). But the touch of purple gives a bit of a different hue (color) than the pink that it would be without copper. Color difference gets her a spot in the collection. She is bright, but included and weighs .70 carats.