There are a number of methods for plique a jour, a filigree technique that allows light to shine through the enamel, much like stained glass. With plique a jour, there is no backing for the vitreous enamel; instead a structure of metal is made with open spaces, called cells, for the enamels. I form a framework of fine silver square wire and within that framework I solder wires together in a design formed of cells. To make the framework as I do, you need to know how to use the jeweler's torch and how to solder. I use this Russian method of soldering primarily to make fine silver earrings. As the earrings dangle, the light shines through the enameled cells.