2.20" Black Tourmaline (Schorl) - Erongo Mountains

This is a lustrous schorl crystal from the Erongo Mountains in Namibia. Although the crystal has broken away from the original host rock or matrix, the crystal is in overall great shape, and has great natural terminations.

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.