Prehnite is quite a protective stone. It can protect one on all levels, as it strengthens the life force and generally increases energy as well as stimulating it. It aids spirit communication through meditation and visualization, out of body travel and as a powerful dream stone. It is also known as a stone of prophecy which stimulates inner knowing of oneself. It is a very accepting stone, encouraging analytical thinking and helps to dispel unpleasant memories. Prehnite crystals will help to teach one to let go of old memories that are painful.