Ключевые слова: africa, amulet, chalcedony, crystal, dark, fuchsite, fuchsyt, gem, gemmology, gemology, gemstone, geologic, geological, geology, green, igneous, meteorite, mica, mineral, muscovite, natural, nature, object, ore, polished, raw, reflection, rock, rough, sample, schist, science, semiprecious, silica, south, specimen, stone, studio, subsoil, talisman, verdite,