Black Tourmaline var. Schorl

Erongo mountains, Erongo district, Namibia

Purification, Protection // First Chakra (Base) // Element: Earth
Supports Purification of the body, eliminating toxic subtances
Helps dispel worry, judgement, fear, anger, shame, and other toxic emotions
Aids with grounding and cleansing of the energy field 

Black Tourmaline is a complex aluminum borosilicate with a hexagonal crystal system and a hardness of 7 to 7.5. Its color is opaque black. 

Black Tourmaline crystals offer psychic protection for anyone who must work or live in challenging places or circumstances. It can keep one's auric field clear of imbalance even in the presence of destructive energies. Black tourmaline crystals act like etheric vacuum cleaners, clearing oneself and one's surroundings of negativity and disharmony. Another application for Black Tourmaline is etheric purification. Carrying one of these stones in the pocket, holding one in meditation, or sleeping with one in the pillowcase will provide a refreshing dose of cleansing for the auric field and the etheric body. This clearing can even echo down into the physical form. Black Tourmalines are also recommended for ridding oneself of negative thoughts, anxieties, anger, self-judgement, and ideas of unworthiness. 

Black Tourmaline's protective energies are enhanced by combining it with Jet, Obsidian, Black Andradite Garnet, Smoky Quartz, Sugilite, Charoite, and Amethyst. Its grounding can be increased by hematite.