Vintage Black Onyx Ring size 8 1/4 with Modern Space Age design Sterling Silver

Vintage black onyx in sterling silver modern ring. Great simple space age design with black cabochon. No makers mark. From a lot of Mexican and Southwestern jewelry. Size - US ring size 8 1/4 Brand - unknown Material - Sterling silver, black onyx Condition - Great. Some aging and darkening on silver. Can be shined Feel free to message me with any questions. Thanks, Kerri