This is a bit more complicated... The exterior was glazed first with acai and then the tuxedo was applied in a mix of filtered clay paste mixed with FeO (taken from used hand warmers). This made the tuxedo black look mate with some minor spotting. Overall pretty pleased, though the ruby has been discontinued and I need to find a replacement. Suggestions are more than welcomed. Just for credit- glazing was done by my wife (kaliakra) and I did the bodies. Usually it is the opposite.