Helped by strong growth abroad, Blue Nile Q1 sales at record $80m

Gemfields said in a statement that "groups associated with the illegal mining and trading of rubies have taken advantage of the political unrest".

BHP needs to offer at least a 40% premium over Anglo's share price for a new takeover bid, but its CEO has committed to spending discipline.

Sales revenue for the third tender fell 7% to $71 million, bringing year-to-date revenue to $146 million, down from $188 million last year.

The miner announced plans last month to suspend some production in 2025 and cut staff as it grapples with low global prices.