Cone 6: Frost Blue is a mottled blue soft matte glaze that breaks a muted green/gray.
Cone 10: Semi-gloss finish with variegated blue/light blue. Can exhibit green hues.
*The first image is cone 6 and the second image is cone 10.
Tableware producers must test all finished ware to establish dinnerware status, due to possible variations in firing temperature and contamination.