Vintage Art Nouveau Silver Filigree Onyx Inlay Dangle Drop Earrings

Vintage Art Nouveau Victorian Style Sterling Silver Filigree Open Scrollwork with Black Onyx Inlay Oval shaped Dangle Drop Earrings. Marked 925 NF (Nickel Free)  on earring wire. The other earring hook is not original however, it has been replaced. Pictures show how it differs from the other. Black inlay is all black with no other colorations, any white markings seen on them in the pictures are reflections.