19Th C. Victorian Gilt Silver Jeweled Enamel Viennese Pill Box. Features A Gold Wash Over Silver With Floral Enamel And Etched Embellishments. Features Bezel Set Seed Pearls And Garnet. Measures 1.65" X 1". Weighs 26 Grams. Marked 925 With A Clover Mark With The Initials Ibb. Good Condition With Some Loss Of Gilt And Enamel. Vitreous enamel, also called porcelain enamel, is a material made by fusing powdered glass to a substrate by firing, usually between 750 and 850 ƒƒ‚‚ƒ‚‚°C (1,380 and 1,560 ƒƒ‚‚ƒ‚‚°F). The powder melts, flows, and then hardens to a smooth, durable vitreous coating. The word comes from the Latin vitreum, meaning "glass".Enamel can be used on metal, glass, ceramics, stone, or any material that will withstand the fusing temperature. In technical terms fired enamelware is an integrated layered composite of glass and another material (or more glass). The term "enamel" is most often restricted to work on metal, which is the subject of this article. Enamelled glass is also called "painted", and overglaze decoration to pottery is often called enamelling. Vitreous enamel, also called porcelain enamel, is a material made by fusing powdered glass to a substrate by firing, usually between 750 and 850 ƒƒ‚‚ƒ‚‚°C (1,380 and 1,560 ƒƒ‚‚ƒ‚‚°F). The powder melts, flows, and then hardens to a smooth, durable vitreous coating. The word comes from the Latin vitreum, meaning "glass".Enamel can be used on metal, glass, ceramics, stone, or any material that will withstand the fusing temperature. In technical terms fired enamelware is an integrated layered composite of glass and another material (or more glass). The term "enamel" is most often restricted to work on metal, which is the subject of this article. Enamelled glass is also called "painted", and overglaze decoration to pottery is often called enamelling.