Tina Diaz is a daughter of Mary Cain and a sister of noted potters Joy, Linda, and Billy Cain.  She makes very few pieces of pottery each year and this jar has a high shoulder and a short neck.  The jar is carved with a water serpent encircling the piece along with clouds, lightning, and water designs.  There is a complement of matte areas that highlight the highly polished designs.  The design makes use of the negative space on the top and bottom of the jar.  It was traditionally fired to a silvery black coloration.  The jar is signed on the bottom in the clay, “Tina Diaz”.  It is in excellent condition with no chips, cracks, restoration, or repair.