This paper reports the discovery of micro-diamond inclusions in zircon from the Jack Hills (Western Australia), which is up to 4,252 million years old and includes the oldest known diamonds found in terrestrial rocks. The spread of ages indicates that either the conditions required for diamond formation were repeated several times during early Earth history or that there was significant recycling of ancient diamond.
- Martina Menneken
- Alexander A. Nemchin
- Simon A. Wilde
