Approximate size of the piece: 4.5 x 1.8 cm Approximate weight of the piece: 11 - 16 g Origin: Brazil The pieces that will be delivered are similar to those in the photographs. Black tourmaline is considered to be the ultimate protective stone. It absorbs dense energies and directs them to the Earth to be transmuted. It is recommended to use it in its natural form of crystallization. The characteristics of black tourmaline make it a mineral that is widely used in spaces where therapies, cures and healings are performed. Also in places where you want to keep the environment energy clean or neutralize electromagnetic waves.