I have the Gun Melal =5E6 Glaze for you. Works well on all clays. A nice = satin black. Also a nice metallic black under floating blue where it overlaps. Gun Metal Albany =5E5-6 Gertley Borate 11.22 Albany Slip Clay (real or Sub) 88.78 Copper Carb 7.78 Deb in Bolivar Ohio