5.25" x 3.25"
No glaze but that which came from inside of Earth, exploded pumice that broke through the ocean's surface, flew about and then settled back onto the seafloor where it continued morphing until humans picked it up, tightened the bucket lid and delivered it to me. Now it's melted pumice/mud on a chattered clay surface--evidence of silica-rich magma.
Metaphor that came to me at a women's lunch was, "You know how beautiful sheer stockings make your legs look great? THAT"S what this pumice glaze does to porcelain clay!"