"300389994" . "General term for either a blue (BaCuSi4O10) or purple (BaCuC2O6) pigment found in paints and ceramic glazes on Chinese artifacts; made by melting silica with copper and barium at very high temperatures. Developed in China and used to create Chinese blue and Chinese purple."@en . "2014-02-12T10:31:51"^^ . "2015-04-28T20:45:59"^^ . "barium copper silicate (pigment)"@en . . "silicate, barium copper (pigment)"@en . . .