|Diavik diamond mine|
Rio Tinto is one of at least two companies that mine many different resources all over the globe that has publicly stated that it is seriously considering selling off its assets to other players in the diamond industry, chiefly because of declining profits from the sector. Rio Tinto earns approximately 2% of its revenue from its diamond mining activities, according to Mining.com.
The profit margins from Rio's other mining activities are much higher than its diamond earnings. Iron ore, for example, provides Rio with a 70% profit margin.