Vivianite blue First class Weight:25g Lapis lazuli is a relatively

Lapis lazuli is a relatively rare semi-precious stone that has been prized for its deep blue color since ancient times

Tuff purple natural pigment powder

Alkali resistance: 5

Chrysocolla green natural pigment powder

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