Turquoise Inlaying (Firoozeh Koobi)
Inlaid turquoise is a kind of handicraft made by implanting small pieces of turquoise stone in mosaic fashion on the surface of the dishes, ornaments and decorative objects with copper, brass, silver or bronze bases.
A royal beauty of the objects will be created after final polishing of turquoise stones. Firoozeh-koobi or Turquoise fixing consists of jewelries and containers made of metals such as copper, brass, silver, or bronze on which small pieces of turquoise stones are placed side by side with special glue.Turquoise inlaying is one of the newest arts that the use of turquoise and the art of picking these precious stones and polishing them is called turquoise.
Firoozeh-koobi is a relatively young handicraft, and the history of it goes back to around 70 years ago. This kind of handicraft is produced in Isfahan.
According to experts, high quality turquoise is characterized by a dark blue color and less impurity streaks that are known as turquoise Ajami. The turquoise without streaks around the world is called Persian Grade, no matter where they are extracted. Various types of turquoise are available in different streaks that vary in color from green to dark blue, but the turquoise of Neyshabur with dark blue color is a criterion for valuation of turquoise all over the world and Neyshabur mine is the biggest turquoise mine in the world
The pieces must be placed in a way so that no space is left between them as far as possible. In order to fill the possible gaps between Persian Turquoise pieces, temperature is added (to about 40o C) and some more shellac powder is sprinkled onto the pieces until the shellac layer is softened to a melting form, and then try to fill all the spaces by adding smaller Persian Turquoise pieces, or, as they say, the pieces sit well on the surface. This is usually done by pressing Persian Turquoise pieces by hand onto the surface so that they stick fast to it. After the object is cooled, the shellac covered parts become rigid.
After that stage, the parts covered by shellac and Persian Turquoise pieces are polished with emery so the extra shellac and little raised parts of the pieces are flattened.