Rio Tinto Group (LSE:RIO) acquired all remaining stake in Diavik Diamond Mines, Inc. from Dominion Diamond Diavik Limited Partnership on November 18, 2021. Rio Tinto Group (LSE:RIO) already acquired 60% stake in the Diavik Diamond Mines, Inc. Rio Tinto Group (LSE:RIO) completed the acquisition of all remaining stake in Diavik Diamond Mines, Inc. from Dominion Diamond Diavik Limited Partnership on November 18, 2021.