Da Vinci Artists' Oil Color Paint 37ml Cobalt Violet Da Vinci Paint Oil Cobalt Violet is made of top quality oil coloring, as well as the highest quality raw materials that are available. These materials are under continuous laboratory control as well, so that the final product can be assured to be of the utmost quality and be shown to conform to ASTM D-4302 standards. The permanent pigments that comprise this oil coloring are classified as either II (very good) or I (excellent), meaning that the raw materials that make it are high in quality. The product is of a soft and creamy consistency that makes for easy, even, and smooth brushing. It is also easily mixed with any and all other oil colors. The size is 40.6 milliliters, and the product is sold as a box of three, though you can also obtain it in sets of six or ten. This product is made in the United States of America. Da Vinci Alvin Paint Oil Cobalt Violet. Sold by the each.