Zellige, zelige or zellij (Arabic: [z'li?] (Arabic: ????????) or Mosaic is tilework made from individually chiseled geometric tiles set into a plaster base. This form of Islamic art is one of the main characteristics of Berber and Moroccan architecture. It consists of geometrically patterned mosaics, used to ornament walls, ceilings, fountains, floors, pools and tables.
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History
The art of zellige flourished during the Hispano-Moresque period (Azulejo) of the Maghreb and the area known as Al-Andalus (modern day Spain) between 711-1492. The technique was highly developed during the Nasrid Dynasty and Merinid dynasty who gave it more importance around the 14th century and introduced blue, green and yellow colours. Red was added in the 17th century. The old enamels with the natural colours were used until the beginning of the 20th century and the colours had probably not evolved much since the period of Merinids. The cities of Fes and Meknes in Morocco, remain the centers of this art.
Patrons of the art used zellige historically to decorate their homes as a statement of luxury and the sophistication of the inhabitants. Zellige is typically a series of patterns utilizing colourful geometric patterns. This framework of expression arose from the need of Islamic artists to create spatial decorations that avoided depictions of living things, consistent with the teachings of Islamic law.
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Clays for Zellige
Fez and Meknes in Morocco are still the production centers for zellij tiles due to the Miocene grey clay of Fez. The clay from this region is primarily composed of Kaolinite. For Fez and Meknes, the clay composition is 2-56% clay minerals, calcite 3-29%. Meriam El Ouahabi states that:
From the other sites (Meknes, Fes, Salé and Safi), the clay mineral composition shows besides kaolinite the presence of illite, chlorite, smectite and traces of mixed layer illite/chlorite (Fig. 3). Meknes clays belong to illitic clays, characterized by illite (54 - 61%), kaolinite (11 - 43%), smectite (8 - 12%) and chlorite (6 - 19%) (Fig. 3). Fes clays have a homogeneous composition (Fig. 3) with illite (40 - 48%). and kaolinite (18 - 28%) as the most abundant clay minerals. Chlorite (12 - 15%) and smectite (9 - 12%) are generally present as small quantities. Mixed layer illite/chlorite is present in trace amounts in all the examined Fes clay materials.
Forms and trends
The colour palette of the zellige increased, making it possible to multiply the compositions ad infinitum (see picture above). The most current form of the zellige is a square. Other forms are possible: the octagon combined with a cabochon, a star, a cross, etc. It is then moulded with a thickness of approximately 2 centimetres. There are simple squares of 10 by 10 centimeters or with the corners cut to be combined with a coloured cabochon. To pave the grounds, bejmat, a paving stone of 15 by 5 centimetres approximately and 2 centimetres thick, can also be used.
"An encyclopedia could not contain the full array of complex, often individually varied patterns and the individually shaped, hand-cut tesserae, or furmah, found in zillij work. Star-based patterns are identified by their number of points--'itnashari for 12, 'ishrini for 20, arba' wa 'ishrini for 24 and so on, but they are not necessarily named with exactitude. The so-called khamsini, for 50 points, and mi'ini, for 100, actually consist of 48 and 96 points respectively, because geometry requires that the number of points of any star in this sequence be divisible by six. (There are also sequences based on five and on eight.) Within a single star pattern, variations abound--by the mix of colors, the size of the furmah, and the complexity and size of interspacing elements such as strapping, braids, or "lanterns." And then there are all the non-star patterns-- honeycombs, webs, steps and shoulders, and checkerboards. The Alhambra's interlocking zillij patterns were reportedly a source of inspiration for the tessellations of modern Dutch artist M.C. Escher."
Themes often employ Kufic script, as it fits well with the geometry of the mosaic tiles, and patterns often culminate centrally in the Rub El Hizb. The tessellations in the mosaics are currently of interest in academic research in the mathematics of art.
These studies require expertise not only in the fields of mathematics, art and art history, but also of computer science, computer modelling and software engineering, all used for the Hassan II Mosque.
Zellige craftsmanship
Zellige making is considered an art in itself. The art is transmitted from generation to generation by maâlems (master craftsmen). A long training starts at childhood to implant the required skills.
Assiduous attention to detail is needed when creating zellige. The small shaped (cut according to a precise radius gauge), painted and enamel covered pieces are then assembled in a geometrical structure as in a puzzle to form the completed mosaic. The process has not varied for a millennium, though conception and design has started using new technologies such as data processing.
Source of the article : Wikipedia
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