Green Aventurine Tumbled Crystals. Contain 3 beautiful Green Aventurine tumbled Crystals. Measuring approx: 1/2 to 3/4 L It brings mental powers, eyesight, gambling, healing, peace, luck. It comes with all information needed and how to cleanse and charge your stone. A beautiful iridescent organza bag is provided to keep the stones safe when not in use.