Himalayan Crystal Salt Lamps are believed to create negatively charged ions in the air. This is a good thing because modern day pollution and electrical equipment creates positive ions in the air which are potentially harmful to us and cause air quality in areas affected to deteriorate. By using a Himalayan Crystal Salt Lamp you replace the negatively charged ions in the air which helps us to avoid the alleged physical and mental harm that the ‘electric smog’ creates. Each Himalayan Salt Lamp comes complete with light fitting, bulb & plug. Rather then sell them by size we sell them by approximate weight. Items are marked with sizes to give a rough idea of size only, each lamp is completely unique.