Solay Salt crystal lamps harness a very high energy frequency, neutralizing EMF from our modern day living. We recommend at least one lamp per room, although with salt lamps, you can never have too many to help you stay well. The colors in Solay salt crystal lamps come from the mineral content, including red from iron, orange from copper, and yellow from magnesium. Within one lamp may be a combination of colors. Each lamp is unique, hand chiseled using the best 250 million year old Himalayan crystal salt. Can be used as a beautiful display piece, reception area light or simply to nurture your home with plentiful energy and radiance.