Vintage 1940s 10k yellow gold oval onynx ring

Ring is gorgeous. Size 4 1/2 Center has a smooth polished onynx stone and on the top and bottom it has an open cut fan like gold sesign. This is my grandmother's. She can't wear it anymore because fingers got to big. I am displaying it as a pinky ring because her eing size is smaller than my ring. It does look nice though as a pinky ring. From a smoke free home.