Salt crystal lamps are made from salt crystal rocks formed by nature hundreds of millions of years ago and mined hundreds of yards underground from the World's tallest mountains, The Himalayas. These salt crystals are carefully handcrafted to make beautiful lamps of different shapes and designs which offer different colors ranging from off white and light brown to warm pink! As the lit bulb or a candle warms up the lamp, healthful negative ions lift off from the surface and help improve the quality and freshness of the air you breathe. Natural Salts have been used by the medical community since the medieval times, and to this day are thought to reduce Bronchial Congestion, Asthma, Insomnia, Depression, Allergies, Viruses, Sinusitis and Migraines.