The motion of rubbing or holding a stone can be used to bring comfort and distract the mind. Such a distraction can sometimes help ease anxious thoughts and feelings.
This gemstone fidget is associated with the Science Museum's focus on mental health and the Mind Matters special exhibit. Each is shaped to fit comfortably in the hand, with one concave side. Quartz, Rose Quartz, Opalite and Onyx measure approximately 2 inches x 1.75 x .25 inches. Selenite is approximately 1.5 x 1.25 x .75. Each vary slightly in size, shape color and pattern.