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Cloisonné, an enameled art form
with a history as colorful as the beads, dates back more than
500 years. As one of Beijing's most famous exports, the Chinese
have made cloisonné enameling a distinctive art form.
Cloisonné production flourished during the reign of Ming
Emperor Jingtai in the mid-15th century. Most pieces of this
period were made with special blue enamel as the base color,
therefore creating the Chinese term for cloisonné: jingtai-lan
("Jingtai Blue"). Cloisonné now ranks as one
of China's major contributions to the world's fine arts. 
The traditional method of making
cloisonné is an elaborate and complicated process that
involves the following:
Base-hammering. This is the beginning the cloisonné-making
process. Copper, which is easily hammered and stretched, is used
to create the body of the piece. Expert judgment by the craftsman
is necessary during this phase of the process. The craftsman
determines the uniformity of thickness, and the weight of the
piece.
Filigree Soldering. This phase of the process can be compared to embroidery,
as both require great care, skill and creativity. The cloisonné
craftsman solders copper strips onto the body of the piece creating
filigree. These fine strips are shaped into beautiful and sometimes
complicated patterns.
Enamel Filling. This phase involves the application
of the enamel filling. Enamel is made from the basic elements
of boric acid, saltpeter and alkaline mixed with ground minerals.
The enamel mixture is then applied to the compartments separated
by filigrees. Enamel with the mineral content of: iron will turn
gray; with uranium, yellow; with chromium, green; with bronze,
blue; with zinc, white; with gold or iodine, red.
Enamel Firing. During the firing phase, the enamel-filled piece
is placed in the kiln. Re-filling is required during this phase,
because the enamel shrinks during firing.
Polishing. During this phase of the process the filigree
and the filled compartments must be polished over and over to
make them even. A variety of polishing surfaces are used in order
to obtain luster on the surface.
Gilding. The final phase of the process involves an electroplating
process to keep the cloisonné free from rust. A final
polish is required to smooth the exposed parts of the filigree
and the metal fringes of the piece. |