Body jewellry query

[lnr]

I just bought myself a ball closure ring or my belly button, like this one (though with a different design):



The trouble is I can't work out how on earth it opens. I've tried twizzling the ball in case it unscrews but it just seems to go round and round indefinitely. Anyone have any ideas/experience that might help?

Comments

[lnr]

Thanks! Perfect. Getting it on again was a faff too, but no doubt I'll get used to it.