Search Results for: Copper articles
saffron , rarely due to cost, from the crocus sativus. mineral-based colors, including: ochre , an earth pigment that occurs as the mineral limonite ; and orpiment , chemically arsenic trisulfide , as s . green verdigris , chemically cupric acetate , cu(oac) ·(h o) , made historically by boiling copper
plates in vinegar ; malachite , a mineral found in nature, chemically basic copper carbonate , cu co ·(oh) ; and china green, a plant-based pigment extracted from buckthorn (rhamnus tinctoria, r. utilis) berries. blue plant-based substances such as: woad , produced from the leaves of the plant isatis...
https://en.wikipedia.org/wiki/Illuminated_manuscript