Tourmaline comes in a variety of colors, but the most common is the iron-rich black variety known as Schorl. This is our go-to stone for protection and removal of negative energy. Many people keep a piece with them all the time — either in a pocket or purse, or worn as a pendant or bracelet. Na(Mg,Fe,Li,Mn,Al)3Al6(Bo3)3Si6O18(OH,F)4
TOURMALINE, BLACK: (Also known as Schorl or as Aphrizite) Use at the 1st Chakra (Root Chakra/Base Chakra) for protection against electromagnetic pollution and negative energy, grounding, increased physical energy, to banish negative thoughts, to enhance positive thinking and creativity, to reduce geopathic stress, to strengthen the immune system, for cleansing the physical and ethereal bodies, and to aid in decreasing arthritis pain.
Check out this article to find out how black tourmaline can help protect your home: Home Protection Crystal Grid