From an old collection of tourmalines we obtained, this is a stunning, totally gem and lustrous, rich green Cruzeiro Mine Tourmaline crystal striated parallel to its length, with a complex and perfect termination. It is a vivid and rich green through much of its length and within a centimeter of the top it has a bluish cast and allows light to transmit more easily. This is literally gem rough and, as such, most were cut! Stunning gem crystal in the truest literal sense of the word!