“Turunj” settles down in the center of the medial field, and “lachak”s are symmetrically placed on its four corners. The area between “turunj” (medallion) and “lachak”s, has no patterns in simple Lachak-turunj carpets, but it is decorated with helical branches, stylized florets and leaves in the carpets with a complex composition.

"Lachak"s have also various forms. They are placed at the corners of the central field as triangles. Their structure exhibits a great symmetry. Symmetric "lachak"s may have a form of rectangular. And asymmetric "lachak"s are being generally obtusangular. "Turunj” have different kind of names such as Khoncha or medallion, and "lachak"s has got other names like arka, mehrab.

About 60% of Tabriz carpets are made with "Lachak-Turunj" composition. The composition is used in Northern Azerbaijan as well. For example, Karabagh type of "Khanlar" carpet has got the same composition.

The form of “Turunj” depends on the size of a carpet: if the length of a carpet is more than its width, then “Turunj” gets oblongated. And if the surrounding field of Turunj is extended at width, then turunj has got a round shape. These round medallions can be eight-edged and twelve-edged. In rare cases it could consist of sixteen corners.