Friday Mosque, by Unknown Artist, 1375, 14th Century. Iran, Kerman, Kerman, Kerman, Friday Mosque. Detail prayer chamber room calligraphy with the name of Ali geometric calligraphy. The name of Kaliph Caliph Calif Ali is repeated nine times.The spaces between adjoining hexagons, each of which is decorated with compactly textured floral designs patterns, are filled with unglazed terracotta dyed ceramic equilateral triangles, decorated with finely interlaced phytomorphic and geometric designs. 2009 photograph.