Ключевые слова: aggregate, background, beautiful, black, blue, calcium, cluster, colorful, colourful, crystal, crystalline, cube, cubic, design, fluoride, fluorine, fluorite, gem, gemstone, geology, germany, glass, hydrothermal, inclusion, isolated, jasper, macro, material, matrix, mauve, mine, mineral, mineralogy, minerals, natural, nature, ore, pattern, pegmatite, purple, rock, sample, science, specimen, stone, texture, transparent, treasure, violet,