Enamel
Enamel working and decorating metals with colorful and baked coats is one of the distinguished courses of art, is defined as some sort of glasslike colored coat which can be stabilized by heat on different metals particularly copper. Although this course is of abundant use industrially for producing metal and hygienic dishes, it has been paid high attention by painters, goldsmiths and metal engravers since long time ago. In the world, it is categorized into three kinds as painting enamel, Charkhaneh or chess like enamel, Cavity enamel.