Microscopic, ugly diamonds from the Northwest Territories are illuminating how diamonds are made — and pointing to an unexpected helper in the process. A new study suggests they formed from ancient ...
A rare two-coloured diamond has been discovered in Botswana, in southern Africa. The rough stone is half-pink and half-colourless and weighs 37.4 carats - around 7.5 grams. Experts think the diamond ...
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