A pearl, thought to be natural, is revealed to be a bead-cultured specimen with a pre-drilled nucleus.
Read MoreUnique natural conch pearls are studied in the New York lab.
Read MoreA study of a pink Japanese akoya cultured pearl yields information about the material’s colour origin.
Read MoreBlister pearls attached to shells are seen in both the Bangkok and the New York laboratories.
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A study on four Pinctada maculata cultured blister pearls originating from Penrhyn Island.
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A review of Lustre: Pearling and Australia at the Immigration Museum in Melbourne.
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Examination of shells from on P. mazatlanica proves the similarities between that species and P. margaritifera.
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Two blister pearls attached to a host shell believed to have fossilised during the later Pleistocene period and discovered in south-eastern Kenya are studied.
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A sphere with unusual phosphorescence is seen in the Carlsbad laboratory.
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G&G Brief presents an overview of the content of the Spring 2015 issue of Gems & Gemology.
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