Vintage 900 Silver Oval Black Onyx Clip On Earrings

Vintage clip-on earrings featuring black onyx stones set in 900 silver. The "900" marking indicates that the earrings are made of 90% pure silver. This is a slightly higher silver content than sterling silver, which is typically marked as 925 (92.5% pure silver). Key details of the earrings: Material: 900 silver and black onyx. Style: Vintage clip-on earrings with an oval cabochon onyx stone surrounded by a decorative silver petal border. Era: Likely from the early 1900s to the 1970s, given the style and the 900 silver marking.