In our drop-down menus for adding to cart, we show the gauge of the item you are ordering, then the length/diameter, then the ball size if it has any:
Jewelry is measured through a gauge system (see chart below). The higher the gauge number the smaller the wire is. A standard "earring" is usually 20 gauge. Jewelry gauges/sizes can vary between manufacturers. There is no universal regulation on companies to make a standard size in body jewelry. A big part of this is that some jewelry is made overseas and measured in millimeters. And in the USA jewelry is measured in inches/gauges. So many times jewelry can be anywhere from .5mm to 1mm different.
Gauge
Millimeter
Inch
16g
1.2mm
3/64"
14g
1.6mm
1/16"
12g
2mm
5/64"
10g
2.4mm
3/32"
8g
3.2mm
1/8"
6g
4mm
5/32"
4g
5mm
3/16"
2g
6mm
1/4"
0g
8mm
5/16"
00g
9mm to 10mm
3/8"
11mm
7/16"
13mm
1/2"
14mm
9/16"
16mm
5/8"
19mm
3/4"
22mm
7/8"
25mm
1"
26.9mm
1-1/16"
28.5mm
1-1/8"
30.1mm
1-3/16"
31.7mm
1-1/4"
33.3mm
1-5/16"
34.9mm
1-3/8"
36.5mm
1-7/16"
38.1mm
1-1/2"
39.6mm
1-9/16"
41.2mm
1-5/8"
44.4mm
1-3/4"
47.6mm
1-7/8"
51mm
2"
Measuring septum jewelry
Septum jewelry is measured by the diameter straight across the center of a ring. How far it sits below your nose will be dependant on where you're pierced. We've given an example below of a septum that's pierced a bit lower (see the side shot) and how it will look with different diameters. The general rule is, the smaller the diameter the tighter the fit.
