Most Important Blue Pigment in European Painting

Azurite is composed of mineral basic carbonate of copper, found in many parts of the world in the upper oxidized portions of copper ore deposits. Azurite varies in masstone color from deep blue

Colour in art: a brief history of blue pigment

Azurite pigments

Azurite

The Oldest Known Green Pigment in the World

Colour in art: a brief history of blue pigment

Pigment Stories – Interesting Blues; Ultramarine, Anthraquinone

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Vermeer's Palette

Natural Azurite Crystal Tower – MindfulSouls

The Most Expensive Pigment in the World - The Use of Ultramarine

Shop Natural Pigments - Ultramarine Blue (Green Shade)

Pigment Colour Index: Blue Pigments - Jackson's Art Blog

Azurite pigments

Shop Natural Pigments - Phthalo Blue