Vintage natural green emerald black onyx 18kt yellow gold ring.

Special ladies antique black onyx gold filigree ring with a heart framed diamond and an engraved flower design.

Fantastic antique black onyx white gold filigree ring with a pierced diamond center framed by a pentagon.

Dainty Art Deco old European diamond black onyx filigree pendant.

Estate exquisite black onyx diamond bow and flower gold filigree ring.

Beautiful white gold filigree holds a navette shaped black onyx with a pierced diamond center.

Big,  exciting vintage black onyx cabochon amethyst yellow gold ring.

This antique diamond black onyx insect pin has movable wings and legs.