Gold Fields looked at Toyota’s processes in a bid to turn South Deep into a so-called tier 1 mine.

An independent evaluation by CIBC has put Yamana's mineral assets at between $6 billion and $8 billion, in line with Gold Fields' initial offer price.

The 170-carat “Lulo Rose” may be the largest recovered in the last three centuries, Lucapa Diamond said in July.

Langer Heinrich uranium mine in Namibia to restart by the first quarter of 2023.

The DRC has published around 200 contracts and related documents in the last two years.

Barclays' economist Michael Kafe said revenues were on track to exceed budgeted estimates and part of the windfall would be allocated to the public wage bill.

"In principal we have agreed on conditions, whatever the materials, we are going to process them here," mines and energy minister said.

The raid took place on an operation 12 kilometres southeast of Gemfields’s 75%-owned Montepuez Ruby Mining.