Salt lamps are simply large pieces of pure Himalayan Salt with a small bulb inside. They can be solid pieces of salt or decorative baskets filled with large crystals of salt. Himalayan salt lamps have the ability to chemically and physically transform a room, and have unique health benefits. Salt crystal lamps are natural ion generators, emitting negative ions into the atmosphere. Negative ions restore and neutralize air quality. Negative ions can be used to treat illness and improve health.