A pendant light is a light fixture that hangs down gracefully from the ceiling, with its light source often shielded or diffused by a shade made of glass, metal, fabric, ceramic, plastic, wicker or wood. Obviously, the shade is the most important component of pendant lights as it lends aesthetical appeal and optical characteristics to the light fixture. Glass is one of the most popular materials used to make pendant light shades due to its versatility in color, shape and appearance options. Through the simple addition of chemical elements, the color of the glass can be changed. For example, cobalt creates a beautiful blue, uranium and chromium create various shades of green and iron creates a reddish-blue color. Through hand-blowing, mouth-blowing or lampworking, glass shades can be imparted with optical textures and decorative patterns.