Blockchain technology has been used in a pilot project to track diamonds from the mine to retail by South Africa’s De Beers Group, the world’s largest producer of diamonds. The company has tracked 100 high-value diamonds along its entire value chain using an “immutable and secure digital trail [that] was created for a selection of rough diamonds mined by De Beers as they moved from the mine to cutter and polisher, then through to a jeweller” it said in a statement.

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