Thank you for viewing. Tachikichi Creative Glass Kikyō Color-Changing Glass Small Bowl Set of 5 Using a special coloring material called neodymium, this color-changing glass shifts color depending on the light source. It is described as appearing reddish-purple under natural light or incandescent light, and blue under fluorescent light. Size of small bowls: Diameter 10cm x Height 7cm This is a new, unused item in excellent condition, but please understand that it has been stored at home for a long time. The outer box and cushioning material have some minor stains. Shipping is planned via Rakuraku Mercari.