Rio's boss said consumers, governments and shareholders must all be willing to make sacrifices if climate targets are to be met.

Current restrictions have increased the amount of diamonds sold illegally, generating profits for middlemen rather than local communities.

The Vancouver-based miner reported that initial production is to be expected in Q3 2021.

The decisions seek to reduce costs and ride out the sector's lingering weakness.

No Canadian provinces made the top ten list this year.