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    bought an antique brooch/pin with sapphire and pearls

    Hi everyone, recently I bought this antique sapphire & pearl brooch/pin, the piece looks nice and authentic and the pearls look natural to me. there is a "14K" mark and an unknown mark at the back. Anyone has any idea what the unknown mark stands for (maker's mark?). Thank you.
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    a few interesting short pearl articles from the latest G&G

    Quite a few interesting articles appeared in recent G&G journal, below are the links for everyone to read: The electronic device in cultured pearl: https://www.gia.edu/gems-gemology/spring-2020-labnotes-electronic-device-in-cultured-pearl fossilized shell blister and blister pearl...
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    Amazing abalone pearls from GIA website

    http://www.gia.edu/gems-gemology/fall-2015-labnotes-large-natural-pearls-haliotis-abalone-species
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