Focus on Lotiform vessels (Metropolitan Museum of Art) and analyze the Description.
Egyptian faience pottery (as opposed to modern faience) was made from fired earthenware colored with a glaze. The art style was popular in the Third Intermediate Period (c. 1069 BC – c. 664 BC) of Egyptian history. Blue-green, the most popular color used on the earthenware, was achieved through the use of a quartz and calcite lime-based glaze. Egyptian potters crafted relief vases, chalices, and bowls. Many items depicted reeds, lotuses, rivers, aquatic animals, and people, likely due to the glaze's blue-green coloration being associated with water.
quartz earthenware Egyptian faience vase chalice calcite lime modern faience