Jewel Cup in AlexandriteWheelthrown porcelain cup with tape resist pattern, black underglaze lines, and glaze. The tape resist leaves a very tactile surface. This cup would also make a great small vase or paintbrush holder. The purple Alexandrite glaze changes color depending on the type of light that hits it. It can appear purple (daylight and LED light), blue or gray (fluorescent light) and pink (incandescent light). Dishwasher and Microwave Safe 3 1 2" round x 4 1 2" tall