Diamond, the Super Crystal!

The video explores the concept of rock hardness by comparing different rocks through scratching tests. It introduces diamonds as a type of crystal, explaining their unique structure and formation process. Diamonds are formed from carbon under extreme heat and pressure deep underground. The video also describes how diamonds are brought to the Earth's surface through volcanic-like eruptions and their eventual discovery by humans for use in jewelry and tools.

What new insight or understanding did you gain from this video?