Vapor is track #8 on the album Sounds Good Feels Good.
Increases physical strength. Soothes and calms emotional stress. Opens the 3rd eye to the divine. Very visual and creative. I must admit that I have never heard of black amethyst so if im not mistaken in my thinking, it is the same thing as amethyst but appear black because of the dark coloring in it.
Amethyst is a purple variety of quartz (SiO2) and owes its violet color to irradiation, iron impurities (in some cases in conjunction with transition element impurities), and the presence of trace elements, which result in complex crystal lattice substitutions.