|Lithophanes are often made of porcelain, although we have come across examples made of plastic, and even chocolate! This lithophane is made of porcelain which is very thin, and contains an image that is only properly visible when it is back lit. The image is formed because of the differing thickness of the porcelain. Place a lit tea light candle inside, and the picture becomes visible.Part of the attraction of lithophanes is the way the image appears suddenly, almost out of nowhere, when the candle is lit. This lithophane shows Santa's sleigh being pulled by reindeer.