It is a "size 190"
And I had NO idea ring sizes were even defined up to this size... what would be the point? Makes me what to understand a bit more about ring sizes.
I have a feeling that's just extrapolation, ring sizes move up in single units (ie. size 1 is 2 in. size 2 is 4 in.) Those numbers are wrong, but make my point.
This is really cool, though not very practical.