constructed during the first Dynasty. Until this discovery was made, the color blue had not been known in Egyptian art. Metals While not a leading center of metallurgy, ancient Egypt nevertheless developed technologies for extracting and processing the metals found within its borders and in neighbouring lands. Copper was the first metal to be exploited in Egypt. Small beads have been found in Badarian graves; larger items were produced in the later Predynastic Period, by a combination of mould-casting, annealing and cold-hammering. The production of copper artifacts peaked in the Old Kingdom when huge numbers of copper chisels were manufactured to cut the stone blocks of pyramids. The copper statues of Pepi I and Merenre from Hierakonpolis are rare survivors of large-scale metalworking. The golden treasure of Tutankhamun has come to symbolize the wealth of ancient Egypt, and illustrates the importance of gold in pharaonic culture. The burial chamber in a royal tomb was called "the house of gold". According to the Egyptian religion, the flesh of the gods was made of gold. A shining metal that never tarnished, it was the ideal material for cult images of deities, for royal funerary equipment, and to add brilliance to the tops of obelisks. It was used extensively for jewelry, and was distributed to officials as a reward for loyal services ("the gold of honour"). Silver had to be imported from the Levant, and its rarity initially gave it greater value than gold (which, like electrum, was readily available within the borders of Egypt and Nubia). Early examples of silverwork include the bracelets of the Hetepheres. By the Middle Kingdom, silver seems to have become less valuable than gold, perhaps because of increased trade with the Middle East. The treasure from El-Tod consisted of a hoard of silver objects, probably made in the Aegean, while silver jewelry made for female members of the 12th Dynasty royal family was found at Dahshur and Lahun. In the Egyptian religion, the bones of the gods were said to be made of silver. Iron was the last metal to be exploited on a large scale by the Egyptians. Meteoritic iron was used for the manufacture of beads from the Badarian period. However, the advanced technology required to smelt iron was not introduced into Egypt until the Late Period. Before that, iron objects were imported and were consequently highly valued for their rarity. The Amarna letters refer