In Tibet, Buddhist monks' robes are dyed with what member of the ginger family?
Which is a red dye made from the ground-up dried carcasses of species of female scale insects?
Which dye made from benzaldehyde and dimethylaniline is used to color silk, wool?
Mercury, a material utilized by the ancient Romans frequently in wall decoration, is mostly mined from which mineral?
Which animals' ink sacs are used to create the dye known as sepia?
When making dark black inks and dyes in the Middle Ages, what insect was employed as a source of tannic acid?
Do you know which greenish ceramic glaze is used on stoneware?
Which of the following is a hard, brittle gum resin obtained from Garcinia trees that produces a bright yellow powdered form?
In the mustard family (Brassicaceae), which biennial or perennial herb was previously grown as a source of the blue color indigo?
Which Central American and West Indian tree from the pea family (Fabaceae) was once a major source of black dye?