pigmenttikiviä
Pigmenttikiviä, literally meaning "pigment stones" in Finnish, refers to natural stones that were historically used as sources of pigments. These stones, when ground into a fine powder, could be mixed with binders like egg yolk, oil, or water to create paints and dyes. The color of the pigment derived from these stones varied depending on the mineral composition and the specific stone. For example, certain iron-rich stones could yield reds, browns, and yellows, while others might produce greens or blues.
The use of pigment stones dates back to prehistoric times, where they were employed in cave paintings
The processing of pigment stones typically involved crushing them into smaller pieces, followed by grinding them