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Miners discover 37.4-carat half-pink, half-colourless diamond in Botswana

Most pinks gain colour from lattice distortion. The crystal then absorbs light differently. Too much strain shifts the tone brown. Too little strain leaves the diamond clear.
Botswana wants to buy De Beers controlling stake by next month, says President

Boko’s government is in talks with the US — the biggest buyer of natural gems — to remove tariffs on diamonds, and the president expects to meet Commerce Secretary Howard Lutnick to discuss the matter.
Rio Tinto to shut Rs 2,200-cr Bunder diamond project in MP

The Bunder diamond project was discovered in 2004 by the Australia-based mining major and in 2010 it inked an agreement with Madhya Pradesh for the development of the project.

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