Black Tourmaline 8mm beads Stone Crystal BraceletEach Black Tourmaline bracelet is made from ~22 8mm genuine black tourmaline beads. Tourmaline is a powerful, protective stone, and is most commonly used for this purpose. It also offers emotional protection against anxiety and negative thoughts. Black tourmaline blocks electromagnetic waves, (EMFs) so it's useful to have when in an environment you commonly use your phone or other electronics in. Black tourmaline also possesses energy clearing