Black Tourmaline
 
Scorpio Libra Capricorn
 
Its Believed that this Stone is particularly beneficial for those who work or live in challenging environments, as it helps absorb electromagnetic radiation and pollutants.
Recommended by some: Place 4 of these in the 4 corners of your home to create a protective barrier and also siad to be a good stone to protect from radiation.
Some say to use the stone to clear and repel negative energy for a less chaotic life and one richer with positivity and light. Healers use it to nurture your root chakra so it can help reinforce and stabilize your ability to tackle the fiercest of challenges.