This is a K18 vintage cameo ring, belonging to my mother. It features a beautifully sculpted profile of a woman, a truly captivating piece. The hallmarks are 750 (18K gold), and what appears to be a serial number: ⭐598NA (difficult to read, likely this is correct). Approximately size 13. Weight: 5.9g (please allow for slight variations). I recently had the opportunity to visit a jewelry store, and was told that large rings like this are no longer common. Due to rising gold prices, it's difficult to use a substantial amount of metal (making both the cost of acquisition and the selling price too high), so large rings are considered rare. While there are some signs of wear and tear, it is still in good condition and can be enjoyed. The original case is not included. It will be shipped in a different case via Yamato Takkyubin Compact. Please understand that this is a pre-owned item and has been stored at home. Thank you for your understanding. - Material: 18K Gold - Design: Cameo Ring - Color: Brown, White - Style: Vintage - Decoration: Woman, Floral Engraving Thank you for viewing.