The thickest Gauge is 18 Gauge. This would be your choice if you have recently had your nose pierced or wear that gauge normally. 20 Gauge is thinner than 18G and is the standard most popular size. If you are unsure this would be your best choice.
In respect to this, can I put a 16G in an 18G nose piercing?
The standard size for a nose piercing is 18G or 20G, however, your piercer will pierce with a larger needle (up to 16G) to allow for better healing. Never use a nose ring smaller than recommended by your piercer, as there is more risk of rejection, tearing, and migration.
Also know, how big is the stud when you first get your nose pierced?
20 Gauge (.
The standard size for a nose ring, 20 gauge jewelry is what you’ll find most nose studs and hoops come in. This is the smallest size gauge of body jewelry that’s commonly used compared to other body jewelry like earrings and belly button piercings.