Jared Zehmer creates these pots with facets and lids. This particular lid starts as a rounded lid, but he makes marks on the edge to form a square lid. More on this can be found in the Pottery Making Illustrated May/June 2016 issue.
This is a tagine, which is an iconic vessel synonymous with Moroccan cooking. This is traditionally made of earthenware. This example was made by Sumi von Dassow. For more on this piece and the artist herself, take a look at the May/June 2016 issue of Pottery Making Illustrated.