THEY ARE NOT GAUGES, AAAAAAARGH!
A gauge is a unit of measurement, so you may as well be saying you're wanting to close your inches!
Depends how bad/good you're stretching was. If it was slow and done properly with no cat's bum or tearing then the success of a cleaner close is higher. If you rushed it and "ripped" the ear in the process, as many of the uneducated in body modifications do, then you'll most likely be left with horrible scars.
Some piercers can perform a percedure to help close them. basically ear is scalpalled and sown up.
Join and ask on
http://www.bodyjewelleryshop.com/forum/