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Gamblin
Gamblin Artist's Oil Colors Ultramarine Blue 150 ml
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Quantity:
Ultramarine Blue: Warm Ultra Blue is one of the few mineral colors that is completely transparent. Consider mixing Alizarin Permanent instead of fugitive Alizarin Crimson to mix violets.
Pigment: Complex silicate of sodium & aluminum with sulfur (PB 29), Vehicle: Alkali refined linseed oil
Lightfastness I, Series 2, TRANSPARENT