Cone 6: Rusted Iron is a semi-matte, opaque glaze that displays shades of metallic orange and brown. The variation of the glaze is dependent on application.
Thicker application results in metallic matte characteristics. Thinner application results in a smoother surface and darker color.
Cone 10: Increased orange/copper mottling. Increased movement.
*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.