Question: what size are septums pierced with?
Answer: The most common gauge for septum piercings is 16 gauge (approx. 1.2mm thick), however your piercer may decide to use a different gauge depending on your individual anatomy. While 16G is the typical starter gauge, some people choose to size down to 18 gauge (approx. 1.0mm thick) or size up to 14 gauge (approx.