The 170-carat pink diamond, named the “Lulo Rose”, will be sold later this year through an international tender.

Researchers say diamonds formed during a high-energy shock wave from an asteroid collision around 50,000 years ago have unique and exceptional properties.

The miner expects to produce 32m-34m carats, up from 30m-33m carats thanks to what it calls “robust demand” from US customers.

Researchers are using a new framework for understanding the electronic properties of amorphous carbon.

An incident took place on July 13, about 30 km from the Cabo Delgado province's ruby mine, but operations have not been halted.