Anya no niji (Dark Night Rainbow)

curved on top with long arc shape; round mouth opening at top back with irregular edge; curved on back with central vertical rib; front has three panes--convex top rounded section and two bottom wedges forming bowtie shape; black body with subtle shiny slightly diagonal striped pattern; edges of arc form are made of irregularly-edged strips of layered colored clay, with blues, greens, yellows and pinks, creating rainbow