Vintage Onyx Ring - Retro 10k Yellow Gold Natural Oval Black Chalcedony Gemstone - Circa 1970s Era Size 6 1/4 Statement Fine PSCO Jewelry Milgrain Design Band Piece has been professionally cleaned

Piece has been professionally cleaned and polished

They were in business from approximately 1850 to 1971

There are unique bow designs on the bypass setting

Bottom of Shank: 1

Vintage Onyx Ring - Retro 10k Yellow Gold Natural Oval Black Chalcedony Gemstone - Circa 1970s Era Size 6 1/4 Statement Fine PSCO Jewelry Milgrain Design Band Piece has been professionally cleanedClassic vintage circa 1970s era 10k yellow gold onyx ring! This lovely vintage ring features a natural black chalcedony gemstone (commonly known as onyx), which is securely bezel set. There is a classic frilly scalloped border framing the black gem. A beautiful piece of fine 1970s era jewelry! ERA Circa 1970s Retro METAL MATERIAL 10k yellow gold, black chalcedony (onyx) MARKINGS HISTORY Inside of band is marked "10K PSCO P" for Plainville Stock Co.,