*FORMULA CHANGE ON THE FOLLOWING CLAYS*
*181, 417, 420, 563, 630*
$19.00
Cone 5-6
Black is a glossy obsidian glaze that produces an intensely dark surface and attractive high-fire effects at mid-range temperatures.
Tableware producers must test all finished ware to establish dinnerware status, due to possible variations in firing temperature and contamination.