Derafsh Kaviani
Achaemeniads Empire (559–323 BCE)
During the Achaemenid, especially the Cyrus era, the Persian Empire Flag was made of up of a kinglike image, rectangular in shape, split into four equivalent triangles. Each two of these four train triangles had the same color. The national Iranian Flag was, however, the same as the Derafshe Kaviani as cited earlier.
Sassanids Dynasty (224–642 CE)
The Flag at this historical juncture was again made of rectangular leather, covered with thin layer of silk ornamented with jewels, in the center of which there was a four cornered star, pointing to the four corners of the world. This is the same star referred to as Akhtare Kaviani (the Kaviani star) by Ferdowsi in the epics of Shahnameh (the Book of Kings). This Flag was larger than the original Derafshe Kaviani installed on a long javelin, the tip of which was shown above the flag. At the bottom of this flag there were woven strings of yellow, magenta and scarlet, hanging from them were large jewels.