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Eight natural-color pistachio pearls
Identification of “Pistachio” Coloured Pearls Treated by Ballerina Pearl Co.

A report on the colour treatment process for these intensely greenish yellow to yellowish-green cultured pearls and the techniques for identifying them.

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Non-nacreous Pen Pearls
Observations on Pearls Reportedly from the Pinnidae Family (Pen Pearls)

Examines the internal structure, chemical composition and spectroscopic features of 22 pen pearls.

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G-G Spring 2015
Article
Spring 2015 G&G Examines Blue Spinel, Chinese Jewellery Design and the Latest in Synthetics

G&G Brief presents an overview of the content of the Spring 2015 issue of Gems & Gemology.

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Abstract Header from the 2009 issue of Gems & Gemology
Abstracts; Winter 2009

This article, from the Winter 2009 issue of Gems & Gemmology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemmology.

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Abstract Header from the 2009 issue of Gems & Gemology
Abstracts; Autumn 2009

This article, from the Autumn 2009 issue of Gems & Gemology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemology.

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