In Ancient Mesopotamia, cylinder seals were often strung and worn as jewelry. In Ancient Babylon, necklaces were made of carnelian, lapis lazuli, agate, and gold, which was also made into gold chains. Ancient Sumerians created necklaces and beads from gold, silver, lapis lazuli and carnelian. In Ancient Egypt, a number of difference necklace types were worn. Upper-class Ancient Egyptians wore collars of organic or semi-precious and precious materials for religious, celebratory, and funerary purposes. These collars were often ornamented with semi-precious, glass, pottery, and hollow beads. Beads made from a variety of precious and semi-precious materials were also commonly strung together to create necklaces. Gold that was fashioned into stylized plant, animal, and insect shapes were common as well. Amulets were also turned into necklaces. In Ancient Crete necklaces were worn by all classes; peasants wore stones on flax thread while the wealthy wore beads of agate, pearl, carnelian, amethyst, and rock crystal. Pendants shaped into birds, animals, and humans were also worn, in addition to paste beads.