Jet is a stone of protection that stabilizes the environment and calms fears. It is also known as a remarkable healing stone, as it pairs well with nearly all other minerals. It attracts very grounded old souls and is enticing to those who seek knowledge of their existence here on Earth. Jet is able to help clear the auric field, cleanse your physical space, and purify negativity. It is useful in spiritual journeying as a protector, deflecting unwanted energies.
Jet helps clear and energize other crystals. If used often, your piece of Jet should be cleared regularly.
Jet can be helpful in assuaging grief and resolving emotional distress.
From The Crystal Bible, " Jet is actually from fossilized wood, but looks like coal. It has been used as a talisman since Stone Age times. Jet draws out negative energy and alleviates unreasonable fears. It guards against violence and illness."