Worry stones are wonderful for relaxation or anxiety relief. The smoothness of the stone is most often created naturally by running water. 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. This action of moving one's thumb back and forth across the stone can reduce stress.
Other names that worry stones may be called are: palm stones, thumb stones, fidget stones, soothing stones, or sensory stones.
Additionally, the gemstone plays a factor, and add great value to aiding the user.