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UV, negatives, cobalt blue artworks.

  • Writer: Rhiannon Davies
    Rhiannon Davies
  • Feb 10, 2018
  • 1 min read

Cobalt blue is a blue pigment made by sintering cobalt(II) oxide with alumina at 1200 °C. Chemically, cobalt blue pigment is cobalt(II) oxide-aluminium oxide, or cobalt(II) aluminate, CoAl₂O₄.

 
 
 

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