This Sterling Silver Celtic Knot Band is made by the same Flawless Quality standard as the best names out there. It is Hefty, 3/8 inch (9 mm) Wide and totally and perfectly hand polished and oxidized to bring out the detail, without a spec of porosity. It's NICKEL FREE and Hypoallergenic. And there is no plating done on the ring to temporarily hide imperfections. It comes in Sizes 9 to 14, but Half sizes are possible on special requests. this ring can cost you 3 time as much in a fine jewelry store.