Gamblin
Gamblin Artist's Oil Colors Cobalt Blue 37 ml
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Cobalt Blue: True blue first manufactured in 1804. This color is well worth the price because of its working properties and unique color which cannot be mixed. Pigment: Oxides of cobalt & aluminum (PB 28), Vehicle: Alkali refined linseed oil Lightfastness I, Series 5, SEMI-TRANSPARENT.