Vivianite blue First class
Was $23.90
SAVE 38%
$14.90
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Vivianite First class - "blue earth", "blue iron bog ore" natural pigment powder Vivianite First class differs from other types in its deep and intense blue color. This color is achieved through manual sorting of raw materials (stones), and 3-stage cleaning, which also includes a flotation process. Chemical description: Iron phosphate . The mineral is amorphous. Chemical formula: Fe²⁺₃ (PO₄) ₂ 8H₂O Alkali resistance: 3 Lime Resistance: 3 Acid resistance: 1 Light-resistance: 8 Glazing Suitability Acrylic, Oil, Tempera, Watercolor / Gouache Color: saturated blue
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$23.90
$14.90
(-$9)