Beautiful Art Nouveau necklace by Helgen Mfg 
Helgen Mfg was based in Rhode Island. They were founded in 1896.

A purplish blue faceted glass stone is prong set in filigree antiqued gold tone pendant with four dangling bar bead and pearl tassels
Necklace length: 17" with 2" drop
Antique 'push hook' clasp is signed with Helgen hallmark and stamped PAT
Overall very good condition with areas of light metal wear

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