Rugs from the Tabriz area are typified by outstanding and detailed workmanship, particularly evident in the examples made of silk. Decorative schemes derive from antique classical layouts, with the central medallion layout used most often. Vase and animal designs also are common.
The Heriz area is famous for its 19th-century production of wool carpets with symmetrical knotting and squarish shapes. Classical Persian floral motifs are translated into geometric forms outlined in different colors.
Rugs from the Karadagh area are characterized by their long formats and symmetrical knotting. Geometric decoration usually is based on medallions, polygons and stylized plant elements. Dark blues and browns are used for ground colors with livelier colors for the medallions and principal designs.