Find the Perfect Fit with Confidence
Choosing the right body jewellery shouldn't feel overwhelming. Whether you're selecting your first piece, replacing existing jewellery or refining a curated collection, this guide explains post lengths, ring diameters, gauges and fit in a clear, expert-led way.
Learn how jewellery sizing works, understand what suits different piercings and discover how to shop with confidence—wherever you are in your jewellery journey.
Three Measurements You'll See Throughout This Guide
Every piece of body jewellery is sized using just three key measurements. Once you understand what each one means, choosing jewellery becomes much simpler.
The rest of this guide builds on these three foundations, helping you confidently choose jewellery that fits comfortably and suits your piercing.
Gauge
The thickness of the jewellery that passes through your piercing.
Post Length
The wearable length of straight jewellery such as labret posts and barbells.
Ring Diameter
The internal measurement of rings and clickers, determining how closely they sit around your piercing.
Each measurement serves a different purpose. The following sections explain them individually, with practical examples to help you understand which sizes are right for you.
Understanding Jewellery Thickness
Gauge refers to the thickness of the part of the jewellery that passes through your piercing.
Most healed piercings are designed to wear one specific gauge, so in many cases you won't need to choose this yourself. If you're replacing existing jewellery, it's usually best to match the gauge you're already wearing unless you've been advised otherwise by your piercer.
Choosing the correct gauge helps your jewellery fit comfortably and protects the health of your piercing.
| Gauge | Thickness | Commonly Used For |
|---|---|---|
| 20G (0.8mm) | Fine | Nostril piercings |
| 18G (1.0mm) | Standard | Earlobes, nostrils, some helix piercings |
| 16G (1.2mm) | Most common | Helix, tragus, conch, rook, daith, lip and many ear piercings |
| 14G (1.6mm) | Heavier gauge | Navel, nipple, industrial and some cartilage piercings |
If you're unsure which gauge you currently wear, don't worry. Later in this guide we'll explain how to measure your existing jewellery, and if you're still unsure, we're always happy to help.
Choosing the Right Labret Post Length
The ideal post length depends on your anatomy, piercing placement and whether your piercing is fresh or fully healed. Fresh piercings usually require additional space to accommodate swelling, while healed piercings are generally downsized to create a more secure, comfortable and refined fit.
| Length | Typical Use | |
|---|---|---|
| 4/5mm | Healed piercings requiring a very snug fit, such as selected forward helix, tragus or nose (anatomy dependent). | |
| 6mm | The most common post length for many healed ear piercings, lip and noses. | |
| 7mm | Healed piercings needing a little extra clearance due to anatomy or jewellery choice. Such as conch, flat and lip. | |
| 8/9mm | Commonly used for fresh piercings to allow for swelling, or for healed piercings with thicker anatomy. | |
| 10mm+ | Typically reserved for significant swelling, specialist placements or unique anatomical requirements. |
RING DIAMETER
Understanding Ring Diameter
Ring diameter refers to the internal measurement of a ring or clicker. Rather than changing the thickness of the jewellery, it determines how closely the ring sits around your piercing.
A smaller diameter creates a closer, more fitted look, while a larger diameter leaves more space between the jewellery and the skin. The right choice depends on your anatomy, the placement of your piercing and the style you're hoping to achieve.
| Diameter | Typical Appearance |
|---|---|
| 5mm | Very close fit for selected anatomies and placements tragus, forward helix |
| 6mm | Close-fitting look for smaller piercings |
| 7mm | Balanced fit for many ear piercings |
| 8/9mm | One of the most popular and versatile sizes for Daith & Septum |
| 10mm+ | More relaxed fit or suitable for larger anatomy and specific piercings |
Close Fit
The ring sits neatly against the piercing with minimal space.
Balanced Fit
Comfortable everyday fit with a natural amount of clearance.
Relaxed Fit
Creates a looser look with more movement and visual presence.
The same 8mm clicker won't look identical in every piercing—or on every person. Anatomy varies, so the ideal diameter is always the one that fits your individual piercing comfortably while achieving the look you want.
Different Jewellery, Different Measurements
Threadless Labret Posts
Threadless Ends
Clickers & Hinged Rings
Straight Barbells
Curved Barbells
Typical Jewellery Sizes by Piercing Placement
Every piercing is unique, and anatomy always comes first. The recommendations below reflect the most commonly worn jewellery sizes, helping you understand what you'll typically find for each placement. If you're unsure, we're always happy to help you choose the right fit.
Helix
- Threadless Labrets
- Flatback Studs
- Clickers
Gauge: 16G (1.2mm)
Post Length: 5–8mm
Ring Diameter: 6–8mm
Flat
- Threadless Labrets
- Flatback Studs
Gauge: 16G (1.2mm)
Post Length: 4–7mm
Conch
- Threadless Labrets
- Flatback Studs
- Clickers
Gauge: 16G (1.2mm)
Post Length: 5–8mm
Ring Diameter: 10–12mm
Tragus
- Threadless Labrets
- Flatback Studs
Gauge: 16G (1.2mm)
Post Length: 4–6mm
Rook
- Curved Barbells
Gauge: 16G (1.2mm)
Barbell Length: 6–8mm
Daith
- Clickers
- Seam Rings
Gauge: 16G (1.2mm)
Ring Diameter: 8–10mm
Earlobe
- Threadless Labrets
- Flatback Studs
- Clickers
Gauge: 18G–16G (1.0–1.2mm)
Post Length: 4–8mm
Ring Diameter: 6–10mm
Nostril
- Nose Studs
- Flatback Studs
- Clickers
Gauge: 20G–18G (0.8–1.0mm)
Post Length: 5–7mm
Ring Diameter: 6–8mm
Septum
- Clickers
- Seam Rings
Gauge: 16G (1.2mm)
Ring Diameter: 8–10mm
Navel
- Curved Barbells
Gauge: 14G (1.6mm)
Barbell Length: 8–12mm
Nipple
- Straight Barbells
Gauge: 14G (1.6mm)
Barbell Length: 12–16mm
Common sizing questions
Will My Jewellery Fit?
Every piercing is unique, so it's natural to have questions before ordering. Here are the answers to some of the sizing concerns we hear most often.
Not always. Even if two people have the same piercing, anatomy can vary. Jewellery that fits one person perfectly may sit differently on another.
Possibly. Once a piercing has fully healed, many people choose a shorter post for a neater, more secure fit. If you're unsure which length to choose, we're happy to help.
If your jewellery feels uncomfortable, leaves pressure marks or doesn't move naturally when appropriate, it may be too short or the ring diameter may be too small. Before ordering a larger size, it's worth checking whether the jewellery is actually the correct fit for your anatomy.
Not always. Fresh piercings are usually fitted with longer jewellery to allow room for swelling. Once fully healed, many piercings are downsized to improve comfort and appearance.
If you're unsure before ordering, we'd always recommend getting in touch first. A little guidance can often prevent ordering the wrong jewellery and helps ensure the best possible fit.
Absolutely. If you know your piercing placement, current jewellery or have a few photographs, we'll be happy to recommend the most suitable size for your jewellery and anatomy.
Still Unsure? We're Happy to Help.
Choosing the right jewellery shouldn't feel like guesswork. Whether you're replacing existing jewellery or shopping for something completely new, we're here to help you find the right fit with confidence.
Common sizing questions
Will My Jewellery Fit?
Every piercing is unique, so it's natural to have questions before ordering. Here are the answers to some of the sizing concerns we hear most often.
Not always. Even if two people have the same piercing, anatomy can vary. Jewellery that fits one person perfectly may sit differently on another.
Once a piercing has fully healed, people choose a shorter post for a neater, more secure fit. If you're unsure which length to choose, we're happy to help.
If your jewellery feels uncomfortable, leaves pressure marks or doesn't move naturally when appropriate, it may be too short or the ring diameter may be too small. Before ordering a larger size, it's worth checking whether the jewellery is actually the correct fit for your anatomy.
Not always. Fresh piercings are usually fitted with longer jewellery to allow room for swelling. Once fully healed, many piercings are downsized to improve comfort and appearance.
If you're unsure before ordering, we'd always recommend getting in touch first. A little guidance can often prevent ordering the wrong jewellery and helps ensure the best possible fit.
Absolutely. If you know your piercing placement, current jewellery or have a few photographs, we'll be happy to recommend the most suitable size for your jewellery and anatomy.
Still Unsure? We're Happy to Help.
Choosing the right jewellery shouldn't feel like guesswork. Whether you're replacing existing jewellery or shopping for something completely new, we're here to help you find the right fit with confidence.