Diamond rain could be common on ice giants the most prevalent type of planets that exists in our universe. (Getty)

The vast majority of planets in the universe are adorned with sparkling diamond 'rain' that is forming within their atmospheres, scientists have concluded.

A new study has discovered an indication that "diamond rain" may be more frequent on ice giant planets such as Neptune and Uranus as previously believed.

Diamond rain could be common on ice giants the most prevalent type of planets that exists in our universe. (Getty)

In the past, scientists had proposed that solid diamonds could develop by combining the combination of hydrogen or carbon in extreme pressure on giant planets with ice deep beneath their surface.

However, new research suggests there is a greater chance that diamonds literally "rain" down the giants of ice.