Hello,

I'm planning a few adjustable rings, which would be slightly open on the underside of the finger. I'd be making them in 925 silver and bronze.

Lets say the band is made at size P, 1.3mm thick and 6mm wide, slightly open at the bottom. What would be the safe sizes to recommend the ring for when advertised? P - R, or P - S etc.

Just looking for a general idea here so I know which sizes to cover. Id hate for someone to buy my design only for it to snap because it was a little too small for them when adjusted.

Thanks!
HV