A worry stone is a small, smooth crystal or gemstone with a thumb-shaped indention.
Worry stones fit perfectly between the thumb and index finger. The gentle motion of massaging the thumb back and forth across the stone provides a place to physically touch that can bring down stress and anxiety levels and sooth ones mood.
Worry Stones are much like how prayer beads are used, the action of rubbing a stone and holding positive thoughts and intentions can help deal with anxiety & stresses.