A powerful warrior stone. Onyx crystal suppresses toxic emotions. It helps you to get rid of negative perceptions. A defense against negativity which removes sorrow and depression. It improves your self confidence. It is a protective stone worn when facing enemies in battles or difficult situations which gives you strong support in your personal or professional life. Onyx is so effective in improving the condition of the kidneys, the eyes, and the hair and it is useful for bone marrow diseases. It helps you lose weight! Onyx is December’s mystical birthstone and Leo’s zodiac’s.