Question: what is the difference between 18 and 20 gauge nose rings?
Answer: 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).