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Monday, November 02, 2020
Quench-Crackled Dyed Blue Chalcedony Resembling Larimar
GIA Lab Notes. Gem buyers beware. Standards tests should help identify Larimar. Advanced testing may be required to confirm the cause of blue color and the presence of polymer treatment.
Useful link: https://www.gia.edu/gems-gemology/summer-2020-labnotes-crackled-dyed-chalcedony
Labels:
Gems & Gemology,
GIA,
Lab Notes
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