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Emerald crystals from Colombia, Afghanistan, and Zambia
Photoluminescence Spectra of Emeralds from Colombia, Afghanistan and Zambia

Compares PL spectroscopy data of 48 emerald samples from three countries to evaluate the usefulness of the technique in geographic origin determination.

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Rough Emerald
Seeing Green: All About Emeralds

Want to see into the future? Be an eloquent speaker? Defeat spells and enchantments? Such is the lore of the emerald.

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