Rough Black Tourmaline
Approx weight 40g - 50g
 
Black Tourmaline primarily resonates with the Root Chakra yet its powerfully grounding nature supports bringing alignment to the entire chakra system. 
 
Black Tourmaline is beleived to hold protective qualities and may be beneficial in shielding from and tranmuting lower vibrational energy that may be near the energy field. 
 
On a practical level, Black Tourmaline is a great crystal to have close by if you work on a computer for long periods or in area that has a high electronic equipment load as it may assist with absorbing EMFs. 
 
Physically it may assist with supporting any issues with the skeleton, lower back and legs. 
 
Emotionally it may be a good crystal companion to work with for those who stuggle with anxiety or panic attacks.