Crystal healing is an alternative medical technique in which crystals and other stones are used to cure ailments and protect against disease. Crystals act as conduits for healing — allowing the right movement of energies, positive, healing energy to flow into the body as negative, disease-causing energy flows out.

Science hasn´t proved that crystals are able to heal illness but the popularity of this alternative practice has increased a lot in the past years. Healing crystals remain popular at health spas and at New Age health clinics, sometimes incorporated into related practices of massage and Reiki. The use of crystals in such environments may help induce relaxation, although this effect is also not backed by scientific evidence.