You can identify different types of pearls used in old jewelry, including distinguishing natural pearls from less valuable cultured examples.
Pearl Quality Factors
PEARLS – How to Tell a Real Pearl from a Fake - Dover Jewelry Blog
How To Tell If Pearls Are Real - 7 Quick Easy Steps – PEARL-LANG®
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Stones Used in Vintage Costume Jewelry
Necklace Made of Natural Semiprecious Stones - Lapis Lazuli, Turquoise and White River Pearls on a Pink Background. Stock Image - Image of blue, freshwater: 134110581
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