Enameling is an art based on painting and decoration of the surface of metal bodies and rarely ceramic objects covered by a coat called enamel. In fact, enamel is a clear glazing and glass obtained frommerging glass glaze and metal oxides. Having baked in kiln, it becomes hard like glass. Enameling is done on the copper and brass bodies. Of course, inorder to make jewelry and decorative objects in addition to copper, gold and silver are used too. As for the history of making enamel works no precise idea may be expressed, the first works of enameling which have been ever found so farare six golden ringswhich date back to 1300 B.C in Cyprus.They are the onlygenuine gemmed enameling works. In Iran, some of the researchers believe thatit dates back to 1500 B.C. According to Pope, thefamous historian, enamelinggemmed objects are of the Iranian innovation and its wonderful sample is Khosro’s Cup related to the Sassanidperiod.The climax of the enamel art has been in Seljuk period, then during the Safavid period in Esfahan, this art is mixedwith paintings of the court feast and the hunting games … displaying a new manifestation. Enamel-workers present their works in two styles: painting and squaring, but whatever is done in Esfahan is in painting style. In order to prepare enamel works several stages should be done: first, the object which is to be enameled is made of copper in any desired shape and size by copper-worker; second,its surface is coated by a kind of white glaze(Kaolin) after 3-4 times heating in a kiln with 700 degree centigrade for a certain time.Now it is prepared for painting. After suitable colorationcompatible with the used colors, the temperature of the kiln is adjusted so that while color stick to the body of the enamel it prevents burning. Enamel-workers use gold oxide, copper oxide and fine cohesive mud (gel mashi) to prepare red, green and blue and yellow colors respectively. One of the important factors determining the quality degree of a piece of enamel work is non-scratch abilityof its body surface afterfinishing the baking stages in the kiln which must be carefully considered.