Highly pigmented and finely ground watercolors made by hand in the USA. Extra fine watercolors produce clean washes even layers and also possess superior lightfastness properties. Zoisite a mineral from Austria discovered in 1804 is a lush primal green with a dark - almost black - bottle green granulating surface. With minimal paint to water the effect is a gray-green with a micro-dotted surface. With maximum paint to water the surface fractures to a faux leather look with a distinct three-dimensional effect.