A Persian carpet ( ) or Persian rug ( ), also known as Iranian carpet, is a heavy textile made for a wide variety of utilitarian and symbolic purposes and produced in Iran (historically known as Persia), for home use, local sale, and export. Carpet weaving is an essential part of Persian culture and Iranian art. Within the group of Oriental rugs produced by the countries of the "rug belt", the Persian carpet stands out by the variety and elaborateness of its manifold designs. Persian rugs and carpets of various types were woven in parallel by nomadic tribes in village and town workshops, and by royal court manufactories alike. As such, they represent miscellaneous, simultaneous lines of tradition, and reflect the history of Iran, Persian culture, and its various peoples. The carpets woven in the Safavid court manufactories of Isfahan during the sixteenth century are famous for their elaborate colors and artistical design, and are treasured in museums and private collections all over the world today. Their patterns and designs have set an artistic tradition for court manufactories which was kept alive during the entire duration of the Persian Empire up to the last royal dynasty of Iran. Carpets woven in towns and regional centers like Tabriz, Kerman, Ravar, Neyshabour, Mashhad, Kashan, Isfahan, Nain and Qom are characterized by their specific weaving techniques and use of high-quality materials, colours and patterns. Town manufactories like those of Tabriz have played an important historical role in reviving the tradition of carpet weaving after periods of decline. Rugs woven by the villages and various tribes of Iran are distinguished by their fine wool, bright and elaborate colours, and specific, traditional patterns. Nomadic and small village weavers often produce rugs with bolder and sometimes more coarse designs, which are considered as the most authentic and traditional rugs of Persia, as opposed to the artistic, pre-planned designs of the larger workplaces. Gabbeh rugs are the best-known type of carpet from this line of tradition. As a result of political unrest or commercial pressure, carpet weaving has gone through periods of decline throughout the decades. It particularly suffered from the introduction of synthetic dyes during the second half of the nineteenth century. Carpet weaving still plays a critical role in the economy of modern Iran. Modern production is characterized by the revival of traditional dyeing with natural dyes, the reintroduction of traditional tribal patterns, but also