Ключевые слова: amethyst, birthstone, brazilian, closeup, creation, crystal, czech, deposit, environment, environmental, facet, faceted, fashion, formed, gem, gemology, gemstone, geode, geologic, geological, grown, hard, horizontal, igneous, jewel, jewelery, lavender, lights, macro, magenta, mauve, metamorphic, mineral, natural, nature, points, precious, purple, quartz, reddish, rock, semiprecious, stone, violet,