Size approximately US size 7 (Japanese size 14) vintage ring. Polishing has been done. The red oval-shaped stone was identified by AI as either Muscovite or Rhodochrosite, but personally, I think it's closer to a brownish Muscovite. It's a stone with beautiful, mysterious stripes. Silver hallmark present. - Material: Silver ring - Shape: Oval Price includes shipping. Thank you for looking! (^ ^)