Guttus

This guttus is a black-glazed ware, which is a style of ancient Greek pottery. The term “black-glazed” refers to pottery that has been covered in shiny black slip, or liquified clay that turned a glossy black color when it was fired in a kiln. This vessel was either made using a potter’s wheel or it was pressed into a clay mold.

https://learn.ncartmuseum.org/artwork/guttus/