Black tourmaline (schorl) is the most protective-looking of gems: deep velvet black with a vitreous gleam, hardness 7–7.5, and striking in both raw crystal and polished form. Abundant worldwide yet rarely cut with care, fine faceted or polished schorl has real graphic presence.When available at GEMIC Institute, each black tourmaline is natural, certified by our laboratory and shown exactly as it is. Ask our gem hunters for current availability.