Item: Vintage Antique Art Deco 14K White Gold Black Onyx Sapphire Lavalier Pendant. This is not stamped. It is testing as 14K. The donut is black onyx. The white stone is testing as sapphire. The chain and display box are not included in the sale of the pendant.
 
Measurements: 1 & 9/16th of inch long. It weighs 1.61 grams.
 
Condition: Vintage/Antique, previously owned. There are some small chips on the black onyx. There may be other very minor sings of age/use/patina.