Light is one of the most important elements of the design of a room and a chandelier is a great way to add a visually stunning focal point and also to add to the overall light. When purchasing a chandelier there are two bulb types to consider. In each bulb type there are a variety of designs and even light shades.
Incandescent:
Incandescent light bulbs are one of the most popular options. Simply put, an electric current passes through a thin filament, heating it which produces the light. Incandescent bulbs are made in a variety of voltages which is usually classified according to the electrical power that is consumed, measured in watts. The bulbs are available in a variety of shapes and sizes. For a decorative application, such as a chandelier common incandescent options are candelabra, twisted candle and bent-tip candle which all are based upon the traditional design of using the bulb to mimic flame. Other decorative incandescent options include fancy round and globe. Many times, there are options as to purchasing the bulbs clear or frosted with a specific color.
Fluorescent:
Fluorescent light bulbs also known as CFLs or compact fluorescent lights are replacing Incandescent lights in many applications because they give more visible light for the same amount or less electrical energy input. CFL's are designed to fit in all existing and new light fixtures which previously were used only for incandescent. 
CFLs use less power and have a longer rated life, but often time are more costly at the initial time of purchase. The average CFL lasts 8 to 15 times longer than of incandescent which might make a big difference if it is difficult to change the lights on your chandelier due to its height or weight. Another difference between incandescent and CFLs is the immediate applications of voltage. CFLS take a perceptible amount of time to achieve full brightness. Although some CFLs are labeled for dimming most will not function this way which makes Incandescent lights more functional if that is an important consideration.
