Ultra Violet will have a light pinkish-purple hue at Cone 05 and will deepen slightly when fired at Cone 5. The color will then lighten when fired to Cone 10, but will still retain its purple hue. Applying a clear glaze over it will help enhance the color of the Underglaze at all firing temperatures.
Recommendation: Due to potential variations in raw materials between production batches, we recommend conducting a test firing (Test Tile) with each new batch number before actual use.