Ключевые слова: abstract, agate, backgrounds, banded, blue, chalcedony, color, crystal, gem, geology, layered, marble, marbled effect, material, milky, mined, mineral, multicolored, nature, onyx, ornate, pattern, pink, precious gem, quartz, red, rock, semiprecious gem, silica, smooth, stone, striped, textured, transparent, yellow,