Ключевые слова: agate, amethyst, background, bands, beautiful, cavity, circular, citrine, concentric, crystal, decorative, design, fascinating, gemstone, geode, geology, glossy, hollow, internal, jewel, layers, mesmerizing, mineral, natural, ornamental, pattern, polished, precious, quartz, rock, round, shiny, sparkly, spherical, stripes, stunning, surface, texture, unique,