5-7 pounds. Himalayan Salt Lamps are made from pieces of Himalayan salt crystals. They serve as beautiful interior decorations and act as natural sources of light. However, the many diverse functions of Himalayan salt extend far beyond aesthetics. Combined with a light source inside the lamps, the chunks of salt produce negative ions, which yield positive effects on indoor air. Placing a Himalayan salt lamp in every room of the home can reap several health and environmental benefits.