Raining Diamonds

We all know diamonds are formed when carbon faces extreme heat and pressure. We also know that this happens on Earth under its very many layers. So how does it rain diamonds? Well fortunately or unfortunately, this doesn't occur on our planet. This takes place on Saturn, Jupiter and Neptune. Researchers have based this theory on basic chemistry. It is known that these planets have an atmosphere which have methane in them. we also know of massive lightning storms occurring in these planets. It has been deduced that when methane gets burned up by lightning, it transforms into soot/carbon. As the soot falls towards the planet, it clumps together as graphite which faces intense pressure as it falls towards the surface of these planets, turning them into diamonds! However, larger planets like Jupiter and Saturn are said to be too hot for the diamonds to stay in diamond form for too long. But cooler planets like Neptune are said to have diamonds scattered all over their surface. I can only imagine how sparkly the surface of these planets might look. It is a different story that in such quantity, diamonds would not have much value.