Indigo underglaze is a deep purple-blue color at cone 05 and darkens under a clear glaze. When fired to cone 5, it becomes more blue in color and then darkens slightly at cone 10.
Safety Warning
Tableware producers must test all finished ware to establish dinnerware status, due to possible variations in firing temperature and contamination.
Safety Warning
Tableware producers must test all finished ware to establish dinnerware status, due to possible variations in firing temperature and contamination.