Order online for Black Agate Worry Stone today from Natural Agate. Black Agate protects from danger, gives power against forces of darkness, and brings emotions into equilibrium. Agate can harmonise positive and negative forces, alleviate bad dreams and can give courage, energy, strength, and dispel fears, all of which increase self-confidence. Anyone can wear the mystic stone and there is no negative impact of wearing Black Agate gemstone. This stone is considered to be mainly balancing stone that will clean negative energy from your aura, bring in more energy and joy and peace into your life. Worry stones (palm stones, thumb stones) are smooth, polished gemstones, usually in the shape of an oval with a thumb-sized indentation, used for relaxation or anxiety relief. They are used by holding the stone between the index finger and thumb and gently moving one`s thumb back and forth across the stone.