Himalayan Rock Salt Natural Crystal Lamp, 11.5" Tall &ndash; Soft Calm Therapeutic Light &ndash; Naturally Formed Salt Crystal Design On Onyx Marble Base &ndash; Tibetan Evaporated Rock Lamps &ndash; Dark Orange Hue Nullify Imported SALT CRYSTAL LAMP HIMALAYAN CRYSTAL LAMP: The beautiful orange-red Himalayan Crystal Salt Lamp is mounted on an onyx base. Mined from a private mine deep in the Himalayans, these exquisite salt lamps glow a luminous deep red GENUINE HIMALAYAN SALT LAMP: This crystal salt was culled hundreds of millions of years ago and, as a result, has special properties and high mineral content. These negative ions bond with air pollutants (positive ions) and neutralize them to healthful effect VERSATILE HEAT THERAPY LAMP: Heat released through the bulb (in our salt lamps) or the flame (in our candle holders) provokes the salt of the lamp to emit negative ions. And, while it comes with a 15-watt bulb, it can accommodate up to a 75-watt bulb; perfect for a massage therapist who wants to warm the balls even more. CLEANER AIR: Salt crystal is a natural air purifier. Once the candle is lit, the holder will emit negative ions that fight against the positively charged particles that make you feel congested and exhausted