Each Empire State Building ornament is constructed of molten glass hand-blown into a mold. Once the glass is shaped, it is then silvered. Silvering helps to create a reflective property and depth of color in the ornament. After the ornaments are dry, they are then decorated. Each of these ornaments is hand-painted. The painting process can take up to one week for a single Empire State Building ornament. As they are individually hand-painted, you are guaranteed to receive a unique ornament, since no two will look exactly the same.