Just messing around around with my VX3 a little, and i noticed in coin & jewelry the VX3 hammered a 925. ring and a silver 1949 dime. But in deep silver the VX3 hammered the 1949 silver dime BUT would not even pick up the 925. silver ring... Question is.. Does anyone have any answers as to why this is. would it have something to do with the 'way rings are made, 'round circles with no middle? I don't think it's the VX3. just spitballing, but serious about answers if you please.