Cobalt Carbonate Size:100 g An important opacifier

An important opacifier

The handle is bamboo and traditional in appearance

Black copper oxide is a black powder used as a colorant in the preparation of slips and glazes

Reduces a warm orange/brown

Used for its tan color and its ability to give mottled effects to glazes

Cobalt Carbonate Size:100 g An important opacifierA pinkish powder, cobalt carbonate is very fine grained and disperses better than cobalt oxide in the glaze slurry and the glaze melt, and therefor it provides a more evenly distributed color in the glaze. Cobalt carbonate produces vibrant shades of blue in glazes, slips and underglazes and is stable at all firing temperatures. In terms of colorant strength, cobalt carbonate is a weaker form of cobalt oxide though both are good sources of cobalt.