Beautiful black tourmaline crystal necklaces with adjustable lengths from 20 inches long to 25 inches. No need to fuss with a clasp! The pendants on these are so beautiful in person, each with their own unique little inclusions inside. Black Tourmaline is a protective stone which repels and blocks negative energies and psychic attack. Black Tourmaline also aids in the removal of negative energies within a person or a space. Black Tourmaline will cleanse, purify, and transform dense energy into a lighter vibration. Disclaimer: The information provided within our store is both intuitive and derived from traditional wisdom sources which may not be verifiable by scientific methods advocated by the FDA or other governmental agencies. Because individuals react differently to energies, vibrations and/or beliefs, we cannot offer a guarantee of results or reactions.