giavaldesynegualOct 1, 20211 minIndigo Plant as Medicine The Indigo Naturalis plant, an herb, has been used as a natural dye, famously by the Maya and as a medicine for centuries. The Indigo...
giavaldesynegualSep 29, 20212 minMaya BlueDuring the 17th Century, artists Rubens and Carravagio used ultramarine blue pigments that were made using crushed semi-precious lapis...