Before revision: History upalt=cobalt blue Chinese porcelain |Early Chinese blue and white porcelain, manufactured Cobalt compounds have been used for centuries to impart a rich blue color to glass, glazes, and ceramics.
After revision: EtymologyHistory upalt=cobalt blue Chinese porcelain |Early Chinese blue and white porcelain, manufactured Cobalt compounds have been used for centuries to impart a rich blue color to glass, glazes, and ceramics.