Persian Kashan rugs are among the very finest Persian rugs and carpets. Kashan was a center of silk production since Safavid times and some of the best classical Persian silk rugs have been attributed to Kashan. At the end of the nineteenth century the weavers there began to produce high quality rugs and carpets as well, which continued the high standards of design and technique established in the classical era. The very best antique Kashans carpets are known as Motashem Kashan. They often have medallion designs, but allover Kashans are not uncommon. The palette can be deep and rich in the classical tradition, or it can utilize softer hues appropriate to modern decor.