Cobalt Carbonate

Available from Seattle Pottery Supply when we last checked. Sold from the shop’s own store; the price there is the one that counts.

Cobalt Carbonate (CoCO₃) is a deep blue powder used in ceramics to produce vibrant blue colors in glazes, stains, and decorative slips. It is highly stable during firing, providing consistent color in both oxidation and reduction atmospheres, making it essential for blue-and-white wares and high-temperature glazes. Cobalt is expensive because it is a rare metal, mined in limited quantities, often as a byproduct of nickel or copper production. Its extraction requires complex processing, and globa