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Emerald

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The Emerald is a variety of the mineral Beryl, colored green thanks to trace amounts of Chromium and sometimes Iron. They are highly prized as gemstones and ounce for ounce are the most valuable gemstones in the world, often made more so by inclusions. Beryl has a hardness of 8 on the 10 point Mohs scale of hardness.

Emerald is also the name of a town in Queensland.

Further Reading

  • Emerald & Other Beryls, John Sinkankas, Geoscience Press, 1994, hardcover textbook, ISBN 0801971144
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