Khorram Darreh County is a county in Zanjan Province in Iran. Khorram Darre Granite is one of the special stones with iran origin that has not foreign similars and has a special position in the domestic and foreign markets.The main color of this stone is Dolphin, which, depending on the weathering and level of the extractive mines, makes its color golden. However, its granulation varies, but among other granites it has a coarser texture.