A deep, clear blue. Translucent enough to be used over fine details or underglaze, Sapphire starts as a pale blue and becomes darker as it pools.
Frank's Colored Celadons are a beautiful series of translucent glazes. Because they can be seen through, they are perfect for work with fine details or carving, or as an alternative to clear for ware with underglaze. They do not run and look great on their own or combined with other glazes.