Please Note: due to the nature of gemstones, carvings may slightly vary in size, color, and shape. 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. Package content: Each worry stone comes with one gift box as free. Stone size:(approx.) 1.7" in length,1.34" in width, 0.24" in thickness. Thumb Worry Stones Type: Natural Tiger's eye gemstone.