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Oxides

Natural metal oxides are used in glazing as colour pigments. The colours are revealed only once the glaze is fired in the kiln.

The 5 main oxides are:
– iron: brown and ochre
– copper: dark green
– cobalt: blue (the most used colour in azulejos and Delftware)
– manganese: aubergine colour (often combined with blue)
– antimony: yellow.

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