Black Agate Worry Stone
These pocket tranquilizers use a form of reflexology, or nerve pressure. Rubbing the smooth surface of the stone puts pressure on nerves within the thumb that may release endorphins, the brain's natural stress reliever.
Black Agate, like all black stones, is a grounding and protective crystal. It gives a calming peace that helps those during a period of bereavement. Black Agate gives inner strength to move on and is also very helpful in keeping the peace in stressful households.