Black Tourmaline 
"The Protector"
Root Chakra
 
Transmutes negative energy into positive energy
Powerfully grounding, it helps to stay resolute and overcome difficult situations
Deflects energy draining attempts 
Helps to overcome fears
An aphrodisiac stone
Increases physical vitality
 
For home/business: Keep in places where you suspect there is negative spiritual activity. Keep at the desk when you need a pick me up to get through the remainder of your day.
For children: helps overcome fear of the dark
 
Healing energies:
Helps alleviate symptoms of IBS, Crohn's and other intestinal issues
Absorbs excess environmental pollutants
Beneficial for anxiety and obsessive compulsive disorders