[Article] Solving the 1000-year-old mystery of rare blue medieval paint

[J.R Moore]

Did the picture in the article Davidsch linked make anyone else take a long hard look at the two flowers / fruits on You are not allowed to view links. Register or Login to view. ? I thought of this folio immediately just because of the striking use of blue on that one. However, the color of the crude blue paint on You are not allowed to view links. Register or Login to view. — more of an indigo to my eye — doesn't fit super closely with the hues described in the article, at least to my unsophisticated eye. And nor do the two flowers or fruits look all that similar to the fruits of the Chrozophora tinctoria, except for being tri-lobed.

The McCrone report states "The blue paint was unambiguously identified as ground azurite with minor amounts of cuprite, a copper oxide." The samples were taken from f26R which has an identical blue to the f56r you refer to. I think it's a safe assumption that those blue flowers on 56r are also azurite.