Ключевые слова: abstract, adornment, agate, amulet, banded, bands, black, blue, chalcedony, closeup, color, concentric, cross section, crystal, decoration, egg, gem, gemstone, geode, geologic, geological, geology, ground, isolate, isolated, layers, luster, macro, material, mineral, natural, object, ornament, pattern, polished, quartz, rings, rock, section, semiprecious, slice, stone, structure, talisman, thunder, thunder egg, transparent, turquoise,