January 26, 1905: The world's largest gem-quality diamond is unearthed

Each day, thousands of visitors to the Smithsonian Institution's National Museum of Natural History view the rare and spectacular Hope Diamond, a 45-carat blue diamond. And dozens of diamonds bigger than the Hope — with names like Excelsior, Incomparable and Jubilee — have also been retrieved, cut and polished to perfection.

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Timothy Oleson

Timothy Oleson

Tim is the news editor at EARTH, and writes the Bare Earth Elements blog. His scientific interests span the geosciences from biogeochemistry to seismology to space science. Formerly based in Madison, Wis., he now resides in the Washington, D.C., area.

Sunday, January 26, 2014 - 06:00