Globe (Ball) Salt crystal Lamp/wood base 7-8 inch dia. very heavy lamp 13-15+ pounds ea. Here is some information on the Benefits of Salt
A series of scientific studies show that salt crystal lamps can increase the negative ion count by up to 300%. In nature Negative Ions are created by means of wind, sunlight, surf, waterfalls and rainstorms. Generally, a negative ion is an electronically charged molecule made up of oxygen. A positive ion in the air is a molecule that has lost its electrons through process of air pollution. In fresh country air we find up to 4000 negative ions per cubic centimeter - the size of a sugar cube. Near strong surf or close to a waterfall up to 10.000 negative ions can be found, however the number of negative ions in major capital cities at rush hour does not even reach 100.
The impact of negative ions is powerful. Originally, it was found to speed recovery in burn or asthma patients, but was later discovered to affect serotonin levels in the bloodstream, stabilize alpha rhythms and to positively impact our reactions to sensory stimuli. The greater level of alertness can translate into improved learning, improved well being and enhanced human performance on mental tasks.
Ionized air also substantially reduces the number of airborne bacteria indoors. Dr. Albert P. Krueger, a microbiologist and experimental pathologist at the University of California, found that an astonishing small quantity of negative ions could kill bacteria and quickly take them out of the air so they were less likely to infect people.
Even though they are not a "medical device", Salt Crystal Lamps, by emitting negative ions, significantly reduce a myriad of indoor air pollutants. Negative ions have known benefits, and may provide relief from sinus, migraine headaches allergies and hay fever, reduce the severity of asthma attacks, enhance the immune system, increase alertness, increase work productivity and concentration, increase lung capacity and reduce susceptibility to colds and flu.