Qamsar is a city in, and the capital of, Qamsar District of Kashan County, Isfahan province, Iran. The district is 15 km south of Kashan. From th…Qamsar is a city in, and the capital of, Qamsar District of Kashan County, Isfahan province, Iran. The district is 15 km south of Kashan. From the 13th century and possibly considerably earlier, cobalt was mined near Qamsar. The metal oxide was exported all over the Muslim world for use as the cobalt blue pigment in the decoration of pottery. It is possible that the cobalt ore was also exported to China. In 1301 Abū'l-Qāsim, who came from a family of tilemakers based in Kashan, wrote a treatise on the manufacture of fritware ceramics in which he mentions the village as a source of cobalt ore.
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