Ключевые слова: amethyst, background, beautiful, calcium, closeup, cluster, collection, crystal, cubic, decorative, design, detail, druse, esoteric, expensive, fluorescent, fluoride, fluorite, gemstone, geological, geology, healing, health, hydrothermal, jewelry, layer, luminous, magic, matrix, metaphysical, mine, mineral, optics, purple, raw, rock, rough, science, semiprecious, specimen, spiritual, stone, structure, surface, texture, therapy, translucent, transparent, treasure, up,