Black tourmaline is highly praised for its ability to absorb negative energy from harmful environments. This makes it a perfect stone for protection, grounding, and balance! Wear it, hold it in your pocket, or place it around your home. These tumbled black tourmaline stones are sold by approximate weight. This order may include approximately 67 – 74 stones which measure between 1/2″ x 3/4″ – 3/4″ x 1 7/8″.