A Tabriz rug/carpet is a type in the general category of Persian carpets from the city of Tabriz, one of the major cities of Iran Islamic Republic, and the capital city of East Azarbaijan Province of Iran. Majority of its population are Turkic speaking 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 are the units 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 one of the most diverse displays of designs from medallion, Herati/Mahi, to figural, pictorial, and even 3-d shaped rugs. The major producers in Tabriz today include: Alabaf of Tabriz, Galibafi Nassadji Tabriz , and Miri Brothers. Tabriz has been a large and worldwide famous carpet making center in the Iran and the world. It played a significant role in development the rich traditions of the decorative and applied arts.