1. Formation mode: The formation of diamonds requires extremely high temperature and pressure, and is formed in the high temperature and high pressure environment of mantle and core. The formation of fire drill is due to the reflection and refraction of light on the diamond surface due to the crystal structure and cutting work inside the diamond, forming a bright fire effect.

2. Value: Diamond is a precious gem, and its value is influenced by many factors, including weight, color, purity, cutting, etc. The value of a fire color diamond mainly depends on its fire color effect and the quality of the diamond itself.

3. Use: Diamonds are widely used in jewelry, cutting and other fields, while fire drills are mainly used for viewing and collecting.