Jewelry materials identification guide

What to look for when inspecting antique jewelry:
  • Mold Lines: There are telltale signs of a machine piece so look for mold lines.
  • Color: A synthetic or simulant has a evenly distributed color.
  • Patterns: If a pattern is randomly distributed it generally indicates a natural product while a repeating pattern usually means it is synthetic.
  • Hallmarks: There are hallmarks that help identify the material including signatures, patent or design numbers, country of origin and metal content.
mimi-book-whats-it-made-ofGuidelines and criteria can include weight, sound, odor, Bakelite, bog oak and more. To learn more and become an expert in antique jewelry start with:
What’s It Made Of? A Jewelry Materials Identification Guide by Sheryl Gross Shatz a  Certified Gemologist who teaches at Santiago Canyon College in Orange, Calif.
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