Latest summer while I was traveling trying to get research on color in tourmaline done I had a brand new tourmaline tested. It is the biggest achroite I have that I am sure has not been heated. It is water white and without any shades of grey. I have been reluctant about posting about new stones without having pictures available, but you really don’t need a picture for this one.
I really did not know what to expect when it was probed, but I never expected what I found out. It contains about 1 percent lead! I had never heard of such a tourmalinr, but they are out there and the lead is in the X site in the tourmalines matrix. The only signficant chromophore in the tourmaline was manganese. It must be in the Mn+2 oxidation state because it has no effect on the stone in anyway.
Why does this tourmaline exist. It demands more research. I am working on it.