18 gauge
Subsequently, what is the smallest gauge nose ring?
Nose Jewelry Size Chart Gauges and Sizes for Nose Rings. 1mm-1.5mm- is the smallest size available.
Moreover, what is the thickest nose ring size?
Many jewelry stores and professional piercers in the US deal exclusively in 20 gauge, but gauges do range from 22 (thinnest, . 6mm) to 16 (thickest, 1.2mm).