Pure Salt lamps are formed from rock Salt found in the Pure Mountains. The mountains were created by huge geological forces that resulted, as theorized, with the existing ocean being forced inside the mountain range during the massive continental shifts. Perhaps even more importantly these areas are largely untouched by humans and therefore have a pollution free composition. Pure Salt lamps come in many shapes, sizes and colors we have found that the highest quality lamps generally have a medium to deep color. The color range to look for is the medium orange, pink and reds. Many find that once they get one or two Pure Salt lamps they naturally want to acquire more. You can choose to buy multiple Salt Pure lamps in the same style to keep the look of your home consistent. Or, you can choose different geometric shapes and styles for each room! Some of the most common Salt lamp shapes include our abundance bowls, spheres, pyramids, and natural Pure Salt lamps. for every pound of lamp the corresponding negative Ion benefit is estimated at 10 square feet. So it is important to choose the appropriate sizes for the considered areas.