Jet is a mineraloid derived from fossilized wood, a close cousin of coal. It is one of most essential protective stones, guarding against accidents, illness, negative thoughts and emotions of others. It has been a useful talisman since the Stone Age. Because of its lightweight nature it is easy to carry in a pocket or pouch as an everyday crystal. It naturally disables negativity of all kinds. Jet is a powerful purification ally for the environment and should be used liberally at home or office in grids or largest pieces available. It is said to protect finances and business activities.