This standard round brilliant is a nice, eye clean, gemstone with a flashy, medium dark tone green, that is a bit on the yellow side. I found out that this round was cuprian because I tested it with my spectrometer. And it is interesting to me that this shade of green color could be cuprian and therefor from Mozambique, but to make a big deal about it like the droplets of color are doing is unnecessary. The droplet of color weighs 1.07 carats.
My feeling about cuprian tourmaline goes something like this. If the stone has a bright neon look or an exceptional shade of color, that is rare or maybe not even in existence, without copper, than cuprian tourmaline deserves a premium. If the gemstone just looks like an ordinary gemstone, then the copper content really doesn’t mean much.