Though natural pearls and cultured pearls are both considered authentic pearls, key differences do exist, including how the pearl formation process begins.
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Rare Tear Drop Pearls Natural Color 9-10 Mm Freshwater Cultured Pearl for Excellent Design Jewelry Project,1.0mm Half Drilled,sold by Pair
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PDF] Natural pearls and cultured pearls: A basic concept and its variations
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How to Tell if Pearls Are Real or Fake: The Foolproof Guide - Laguna Pearl