The classic lava lamp design is back, seen here in an eye-popping yellow and purple combo. Lavalicious! The enduring popularity of the bubbling LAVA brand lava light shines on in this classic retro lamp. Features purple liquid with hypnotic yellow lava motion. Wax and liquid inside the glass is heated by a bulb in lower lamp section that heats a coil. The coil heats the wax that creates the oozing, mesmerizing motion._x000D__x000D_