The ideal light fixture for diamond grading or any other type of bench work. Brings out the most subtle color variations in stones. Lamp turns on automatically when shade is opened and turns off automatically when closed. Only 10 1/2" tall when closed, and has weighted base for stability. Uses a special energy saving, long-life, fluorescent lamp which runs at 13 watts (75 watt incandescent equivalent). Furnished with fluorescent lamp. 110 volts.