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Rock Science: The Era of “Super-Large” Diamonds

By Steve Voynick Diamonds have been making big headlines this year. And that’s because mines in southern Africa are yielding some of the biggest diamonds...
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Birthstones: Stick with the Standards Or Choose Your Own

Story by Kenneth H. Rohn For as long as humans have been fascinated with precious gems, they have assigned special significance to them. The 12...

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