1. Lab-grown carats

The world’s biggest jeweller, Pandora, is switching exclusively to laboratory-made diamonds and will no longer sell mined diamonds. CE Alexander Lacik told the BBC the change was part of a sustainability drive. Lab-made rocks are about a third cheaper and demand grew to 6m-7m carats last year while mined stones fell to 111m carats from a peak of 152m in 2017. Production fell most in Russia, Canada, Botswana and Australia. De Beers, which supplies a fifth of the world’s mined diamonds, says output fell 18% last year...

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