Item: Vintage Art Deco 10K Gold Black Onyx Diamond Signet Ring. This is stamped and tested 10K gold. The ring box is not included in the sale of the ring.
 
Measurements: Size 7.5. It weighs 10.69 grams.
 
Condition: Vintage, previously owned. The little screw is missing in the back - but the diamond is holding fast. There may be other very minor signs of age/use/patina.