Approximate size of the piece: 6mm Approximate diameter of the piece: 6cm Approximate weight of the piece: 13g Thread material: Elastic rubber Origin: Brazil The pieces delivered will be similar to those in the photographs THERAPEUTIC PROPERTIES Black tourmaline is considered a reference stone for cleansing, protection, and transformation. It absorbs dense energies and directs them to the earth to be transmuted. It is recommended to use it in its natural crystallization form and in an upright position. The characteristics of black tourmaline make it a mineral widely used in spaces where therapies, cures, and healings are performed. Also in places where there is a desire to keep the environment energetically clean or to neutralize electromagnetic waves.