Only lightfast, high density mineral pigments are used in the manufacture of Blue Earth Pastels. The pastels are almost square in shape and are on the very soft end of the hardness scale. Each stick has a number imprinted for easy identification. Blue Earth offer an impressive colour selection.
Art Supplies from Jackson's | Blue Earth: Black | Jackson's Art Supplies - Jackson's Art Supplies - Finest Art Materials - Best Prices https://www.jacksonsart.com/en-ca/brands/blue-earth?colour_group=26723