Art Deco 18k White Gold Black Onyx Diamond Ostby Barton Ring
This was made by Ostby Barton. This fabulous vintage ring features an elongated black onyx stone with a central ~.10ct old cut diamond set in an 18k (stamped) white gold mount with beautiful filigree design. Top of ring measures 20mm long and ring is size 4.5. Weighs 3.6 grams.
