Cone 6: Mirror Black creates a highly reflective, metallic black gloss finish. On some vertical surfaces and around surface textures, minor matte effects can be seen; all other applications result in the formation of a black, metallic mirror.
Cone 10: Finish flattens. Color remains. 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.