コバルトブルー
1. cobalt blue
2. Cobalt blueCobalt blue is a cool, slightly desaturated blue color, historically made using cobalt salts of alumina. It is used in certain ceramics (historically, especially Chinese porcelain) and painting; the different cobalt pigment smalt, based on silica, is more often used directly in tinted transparent glasses. The pigment is extraordinarily stable. Chemically, cobalt blue is a cobalt(II) oxide-aluminium oxide, or cobalt(II) aluminate, CoAl2O4.
Read “Cobalt blue” on English Wikipedia
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Read “Cobalt blue” on English Wikipedia
Read “コバルトブルー” on Japanese Wikipedia
Read “Cobalt blue” on DBpedia
コバルト・ブルー
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