Ключевые слова: abstract, additive, background, bright, chemistry, colorful, crystal, crystalline, cyanide, dendritic, experiment, geometrical, illuminated, laboratory, light, material, microcrystal, microphotography, microscope, microscopic, microscopy, mineral, mineralogy, mystic, polarization, polarized, potassium ferricyanide, prussian blue, science, scientific, shape, spectrum, structure, surface, symmetry, texture,