Ключевые слова: adornment agata, agate, background, banner, birthstone, black, carnelian, chalcedony, colorful, concentric, crysta, gemology, gemstone, geode, geological, geology, healing, jewelery, jewelry, l gem, marble, material, me, mine, mineral, mineralogy, natural, peridote, polished, precious, quartz, rock, rough, sample, semiprecious, silica, slice, split, stone, striped, texture, translucent, turritella, uncut, veins, volcanic, white,