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Lapis lazuli is a relatively rare semi-precious stone that has been prized for its deep blue color since ancient times
Chrysocolla green natural pigment powder
Watercolor / Gouache
Chemical description: Mineral
Vivianite blue First class Weight:25g Lapis lazuli is a relativelyVivianite 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: Fe (PO) 8HO Alkali resistance: 3 Lime Resistance: 3 Acid resistance: 1