SIZE & FIT
Size & measuring guide
Use a ruler or caliper to measure your jewellery. All measurements are in millimetres (mm).
How to measure your jewellery
Follow the gold measurement line.
Captive bead ring
Measure straight across the centre, from one inside edge of the ring to the other.
Leave the metal thickness out of the measurement.
Circular barbell
Measure straight across the widest part of the inside of the ring.
Measure inside the curve, not across the balls.
Labret / Monroe
Measure the straight shaft from the inside of the flat base to the underside of the ball.
Do not include the ball or the base.
Straight barbell
Measure the straight bar between the two balls.
Do not include either ball in the length.
Curved barbell
Measure in a straight line between the two balls, across the centre of the curve.
Do not follow the curve with your ruler.
Gauge / thickness
Measure across the thickness of the bar. This is a different measurement from its length.
Check the thickness separately from length or diameter.
Nose screw
Measure the straight section from the underside of the ball to where the bend starts.
Leave the bent section out of the length.
Nose bone
Measure from the underside of the decorative ball to the small retaining end.
Do not include the decorative ball.
Tunnel
Measure the outside diameter across the middle of the section that sits in the piercing.
Measure the wearable section, not the flared rim.
Balls & cones
Compare the dimensions of your attachments.
Ball sizes
The size is the diameter across the ball.
- 3 mmdiameter
- 4 mmdiameter
- 5 mmdiameter
- 6 mmdiameter
- 8 mmdiameter
- 10 mmdiameter
Cone sizes
Sizes are shown as base width × height.
- 3 × 3mm
- 4 × 4mm
- 5 × 5mm
- 4 × 6mm
- 4 × 8mm
- 4 × 12mm