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Welcome to Costume Jewelry Collectors Int’l!

Thanks to our generous donors and sponsors, we’ve created a spot where you can explore jewelry-related features, learn about yearly CJCI events, and access resources to help you connect with other collectors.

Come inside and explore the ever-growing world of CJCI!

Start or Grow a Collection

Resources for Buying, Evaluating, Condition, etc.

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Manufacturers, Designers and Styles

Featured Stories

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Research Resources

Marks, Reproductions, Stones, Book reviews, etc.

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RCJ Marks Guide

RCJ Marks Guide & Articles

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