Black Tourmaline Extra Large Crystal - approximately 400 grams and up

Black Tourmaline Large Crystal - approximately 220 grams to 399 grams.

Black Tourmaline Medium Crystal - approximately 95 to 180 grams

Black Tourmaline helps to create a shield around a person or room to prevent negative or unwelcome energies from entering. It is also grounding and helpful to balancing all of the chakras. The stone can even dissolve challenging energy and negative thought patterns, transmuting them into more beneficial energy and beliefs.