Some vintage jewelry looks like inexpensive costume jewelry—but the right maker, construction technique, or hidden mark can make a piece worth hundreds or even thousands of dollars.

In this video, we reveal seven collectible vintage jewelry brands people frequently overlook: Coro, Hobé, Eisenberg, Trifari, Miriam Haskell, Schreiner of New York, and Christian Dior.

You’ll learn which details to inspect before selling or donating anything:

Coro Duette brooches that separate into two clips
Hobé sterling marks and hand-set glass
Eisenberg Original and Eisenberg Ice signatures
Trifari crown marks and individually set stones
Miriam Haskell’s hand-wired construction
Schreiner’s inverted rhinestones and unusual settings
Vintage Christian Dior signatures and date marks

Not every signed piece is highly valuable. Condition, originality, rarity, missing stones, maker attribution, design, and current collector demand all affect the final price. Before selling, turn each piece over, photograph the front and back, and research verified sold examples.

Which of these brands is hiding in your jewelry box? Tell us what you found in the comments!

Disclaimer: Values vary by condition, authenticity, rarity, provenance, and market demand. Consider consulting a qualified vintage-jewelry specialist before selling or restoring a potentially valuable piece.