Orpiment, shown above in its natural form and also pigment form, was widely used in Egypt during and after the 18th dynasty, about 1500 BC. During this period the very progressive and successful female pharaoh, Hatshepsut, was in power. It is thought that she initiated trade with other countries and the use of orpiment began because of her. Because … [Read more...] about Arsenic in the Stew