Russia’s rough diamonds are one of the few major exports still untouched by sanctions in response to President Vladimir Putin’s invasion of Ukraine last year.
But the European Union (EU) and the G7 are about to impose a ban on them.
Russia is the biggest producer of rough diamonds cut from hundreds of mines beneath the Siberian permafrost, where a third of the world’s diamond supply comes from.
Critics have said revenue from the industry helps to finance the war in Ukraine.
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