Solid molecular nitrogen (δ-N2) inclusions in Juina diamonds: Exsolution at the base of the transition zone

- A new type of inclusions in “super-deep” diamonds.
- Raman spectroscopy indicates solid molecular δ-N2 under 10.9±0.2 GPa.
- This is the highest internal pressure ever recorded in a natural inclusion.
- The inclusions originated at ∼22 GPa, 1640 °C at the base of the transition zone.
- This is the geological story behind the formation of “voidites”.