Chaumet Purchase Liens Ring, Size 10 (Size marking 50) Minor scratches from use This is a high-value item, so returns or exchanges are not possible under any circumstances to prevent substitution. If you wish to purchase, please communicate via comments before purchasing. Of course, it is genuine. I would like to use the authentication service, but for some reason, I can't set it up. Mercari administrators, please enable the authentication service for Chaumet rings as well! Stone...Diamond Size...10 Material...White Gold