16 gauge
Thereof, is a 22 gauge nose ring smaller than a 20 gauge?
Nose piercings can come in several different sizes, too. Most often, a 20 or 18 gauge is used. The smallest gauge is typically considered something along the lines of a 22 gauge, which is very tiny. Gauges get larger with decreasing number (i.e. a size 00G is massive compared to a 20 gauge).