Vivianite blue

Vivianite blue

Was $19.90 SAVE 40%
$11.90
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Vivianite Blue - "blue earth", "blue iron bog ore" natural pigment powder 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: dark blue High covering ability

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$19.90 $11.90 (-$8)