A Tabriz rug/carpet is a type in the general category of Persian carpets from the city of Tabriz, the capital city of East Azarbaijan Province in north-west of Iran totally populated by Azerbaijanis. It is one of the oldest rug weaving centers and makes a huge diversity of types of carpets. The range starts at Bazaar quality of 24 raj (Number of knots per length of 7 cm of the widths of the rug) and on up to the incredibly fine 110 raj. Raj is the unit of knot density (it shows the fitness of the rug which based on the number of strings used for the foundation of the rug. Strings materials are usually made of cotton or silk which is used for very fine rugs.
Tabriz has been a large and worldwide famous carpet making centre in Iran and the world. It played a significant role in developing the rich traditions of the decorative and applied arts. The art of Tabriz carpet was at its zenith in the 12th-16th centuries. About 200 Tabriz school masterpieces of the classical or "golden" period of the 14th century are characterized by a harmonic merge of the arts of miniature paintings and weaving, by a high level of craftsmanship demonstrated by artists and carpet weavers.