The silk chiffon will be dyed with a natural mineral dye
, which is both environmentally friendly and OSHA approved.
The Chinese heated this to thicken it and then added vegetable and mineral dyes
to obtain different colours - the main one being red from a form of mercury sulphide known as cinnabar.
The causes, diagnostic techniques, and treatments of illness, as well as human anatomy, are represented in nearly 8,000 extraordinarily detailed images painted on canvas using vegetable and mineral dyes
Genuine thangkas employ only vegetable or mineral dyes
, and each colour has its own significance; white stands for peace, gold represents enlightenment and red signifies passion.
Their carpets are coloured with natural vegetable and mineral dyes
, such as indigo, madder roots, berries, walnut shells.