Strong thunderstorms on Jupiter and Saturn are changing methane in carbon, which then falls on its surface and changes during the fall of graphite or diamonds. This diamond hail then changes near the nucleus of the planet in the sea (lava), scientists say.

The largest diamonds could be up to 1 cm in diameter, which is enough to decorate a ring, necklace or earrings, said Dr. Kevin Baines of NASA JPL.

Scientists estimate that at least 1 Gg diamonds will attack Saturn's surface annually. Some people argue that this can not be said with certainty. Scientists oppose that it's all just a matter of chemistry. They are very confident about their opinions.