A new study found that giant diamonds formed in iron-rich regions deep beneath continents. The findings may help explain the ...

A groundbreaking study by the Kimberlite Research Group at the University of Cape Town has pinpointed where the world's most ...

Jeweler Harry Winston donated the famous Hope Diamond—the largest-known deep blue diamond in the world—to the Smithsonian Institution in 1958. It arrived in a plain brown package by registered mail, ...

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