These perfect pocket stones 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 endorphin's, the brain's natural relaxants..
Black Onyx enhances steadfastness and determination, setting ones mind to a task. It is grounding stone, valuable in difficult or confusing times in our lives. Extremely helpful to people who are in the process of " letting go" or releasing the past attachments to "people , places and things.