Details are unknown. All that is known is the "k14" stamp. Details of the stone are also unknown. We would appreciate it if you could purchase it for its design. There are many questions, but we can only provide the stamp and design, so please consider carefully. The stamp and details are shown in many photos, so please examine them carefully before making a decision. The ring appears to have some tarnish, but it may become clean if polished. It is approximately size 9. The ring is slender, making fingers look beautiful and giving it a feminine design. Please make your own judgment and purchase only after you are satisfied. The price has been reduced at this time, so no further price reductions are possible. No case or other accessories are included. Everything we know is shown in the photos. Please understand that this is a no-claim, no-return (NCNR) sale.