a suggestion, if you have a small local jewler in your area, take it in & ask him to check it. While your asking him , mention how you came about it. & brag a little how you find alot of rings, with your detector.? I did this & the jewler, gave me his card & asked me to bring all my ring finds in. I now have a jewler , that will , check & give me a verble appraisel, at no charge, at any time. .......... good luck ...;jeff