2.1" Black Tourmaline (Schorl) Crystal - Namibia

This is a beautiful black tourmaline (schorl) from the Erongo Mountains in Namibia. It has beautiful, non-metallic luster, though it has no termination.

Tourmaline is a crystalline boron silicate mineral compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. Schorl, or black tourmaline, is the most common form of tourmaline, and has been used for everything from jewelry to piezoelectric guitar pickups.