Zili Sultan rugs are claimed to origin from Abadeh in Iran. While origin is not entirely clear, what is well understood about these rugs, especially those of which were made in and around 1900, is that the design is almost always a repeating field.  The rugs typically featured high knot density, very thin sheared piles, and intricate interpretation somewhat geometric floral motif in the main field (very little negative space).  borders were often narrow and geometric as well.