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Antique Trombone Clasp 18K with Jade

N
13 years ago
AI Appraisal
Description

This detialed brooch with it's green stones (may be jade as the stones do not scratch) has a unique vintage Trombone clasp on the back.   It has no hallmarks, but acid tests as 18K gold and I don't think it is plated-but haven't done a scratch test yet.  I purchased it in a lot with a bunch of other antique jewerly and didn't think to test it because of the discoloration of the metal - which cleaned up using silver polish/dip. I have been researching lately and found that very old gold can actually discolor in a similar fashion. That combined with the Trombone clasp has me concerned that this could actually be solid gold, estate jewelry worth thousands.

 

Category Jewelry and Gemstones
Medium 18K Gold
Distinguishing marks none
Condition Excellent
Date Period 1890's
History Purchased in a lot
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