The Mayan Story: After nearly 15 years of intensive archaeological and laboratory research, a team led by chief chemist and Ph.D. Lori Polette-Niewold made a remarkable discovery. They unlocked the secret of how ancient Mayan pigments were made. Now available for you, these remarkable rich colors possess the bright chroma of a dye with the enhanced properties of mineral based pigments. They possess good tinting strength, and chemical and UV resistance. Made in the USA, eco-friendly both in manufacture and use, they offer bold colors with wonderful possibilities for art and craft.