Black Agate protects from danger, gives power against forces of darkness, and brings emotions into equilibrium. Agate can harmonize positive and negative forces, alleviate bad dreams and can give courage, energy, strength, and dispel fears, all of which increase self-confidence.. . . Supplying Sterling Silver and Natural Stone Jewelry to New Age, Metaphysical, Spiritual and Life Style stores for 35 years . . . each design comes with it's own 1 year workmanship replacement warranty card