My blog series, Costume Jewelry Hallmarks, is an ongoing project to catalog costume jewelry hallmarks. Every effort is made to be accurate, but mistakes happen. If you see an error or an omission, please contact me. This is a reference page only, it is not intended to be copied or used as anything other than reference.
JEWELRY HALLMARKS - J -
JACKSON, TOMMY (Navajo)
JONETTE JEWELRY COMPANY, JJ
JONNE (See Schrager)
JOSEFF OF HOLLYWOOD
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