Bijar carpets are world renowned for their superb artistry, craftsmanship, and excellent material, and can be distinguished by their heavy wool foundation. As the weaver tied each row of knots, she added an extra weft and literally pounded down the knots. The stiff, heavy foundation that is thus created allows antique Bijar carpets, known as “the iron rugs of Persia,” to withstand up to 200 years of heavy use. The region’s weavers have transformed many classic antique carpet designs with their own interpretations. “Mina khani” and “Herati” Persian carpet designs (both highly detailed, overall repeats) and a diamond-shaped medallion were frequently used. An anchor-like design is found in many antique Bijar rugs at the vertical ends of the medallion or as the pendant motif.