Tourmaline is from the beryl family and is not a single mineral, but a group of minerals related in their physical and chemical properties, including elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. Tourmaline is classified as a semi-precious stone and the gemstone comes in a wide variety of colors. Tourmaline's energy is believed to bring your energy centers into balance, opening a gateway to your highest self. They are thought to be very balancing and clearing stones. Black tourmaline specifically is thought to be a grounding and protecting stone energetically. 

This particular specimen is from Pakistan. It has a sparkly side on one end and bright blue tip on the other. Incredibly rare to see black tourmaline with blue. It measures about 2 inches long and weighs 21.56 grams. It has incredible sheen and natural terminations.