Sermeh embroidery is an Iranian style of embroidery. Its origin dates back to the Achaemenid dynasty (about 25 centuries ago). It reached its zenith in the Safavid Dynasty. In this style of embroidery, gold and silver threads would be used to make decorating patterns on the surface of fabric; however, nowadays, almost entirely, threads twisted out of cheaper metals and alloys and metal like yarns have replaced gold and silver. The yarn used in patterning is springlike and elastic. Sermeh embroidery is the most popular in the cities of Isfahan, Yazd, Kashan.