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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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Synthetic emeralds
Confocal Micro-Raman Spectroscopy: A Powerful Tool to Identify Natural and Synthetic Emeralds

More than 300 natural and synthetic emeralds from various sources were examined with confocal Raman spectroscopy.

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Russian Flux-Grown Synthetic Emeralds

The properties and techniques of flux-grown synthetic emeralds from Russia are discussed.

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