This is a very grounding and protective crystal. It absorbs negative energy and transmutes it. Jet is a form of fossilized wood that raises kundalini energy and boosts stability across the board. It is excellent for psychic protection, especially when combined with Black Tourmaline. Jet supports the filtering organs (Liver, Kidneys, etc.). This crystal is 1.25 inches in length. Picture is representative. Individual stones naturally vary.