A 37-carat diamond, half pink and half colorless, found in Botswana, intrigues scientists due to its two-stage origin and rare purity.

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A giant pink diamond found in Lesotho surprises the market: 108 carats, extreme purity, and a value that could reach tens of ...

A pair of diamonds that formed hundreds of kilometers deep in Earth's malleable mantle both contain specks of materials that form in completely opposing chemical environments — a combination so ...