Jewellery Size Guide
Not sure which size is right for you? This guide will help you choose the perfect fit for your piercing — confidently and safely.
Understanding Gauge Sizes
Gauge (G) refers to the thickness of the jewellery bar or ring. The lower the gauge number, the thicker the jewellery.
| Gauge | Diameter | Best For |
|---|---|---|
| 14G | 1.6mm | Nipple, Navel, Industrial |
| 16G | 1.2mm | Helix, Tragus, Daith, Rook, Eyebrow |
| 18G | 1.0mm | Nostril, Helix, Lobe |
| 20G | 0.8mm | Nostril, Lobe, Septum |
| 22G | 0.6mm | Nostril (fine/delicate) |
Always match the gauge to your original piercing size. Using jewellery that is too thin can cause irritation or the hole to shrink. If unsure, consult your piercer.
Understanding Bar Lengths
Bar length refers to the usable length of the straight post — not including the balls or ends.
| Bar Length | Best For |
|---|---|
| 6mm | Flat/flush fit, healed piercings |
| 8mm | Standard fit for most piercings |
| 10mm | Slightly longer, good during healing |
| 16mm | Navel piercings |
| 25mm | Nipple piercings (standard) |
| 30mm+ | Industrial bars, longer anatomy |
How to Measure Your Bar Length
- Remove your current jewellery carefully
- Lay the bar flat on a ruler
- Measure only the post — from one end to the other, not including the balls/ends
- Match that measurement to the table above
Nipple Piercing Size Guide
Since 14G / 25mm is our most popular size for nipple jewellery, here's what you need to know:
- 14G (1.6mm) is the industry standard gauge for nipple piercings
- 25mm bar length suits most anatomies for healed piercings
- If your piercing is freshly done or still healing, your piercer may have used a longer bar (30–32mm) to allow for swelling — you can downsize once fully healed
- If you're between sizes, go longer — a slightly longer bar is safer than one that's too short
Ring Sizes (for Hoops & Clickers)
Ring size refers to the inner diameter of the hoop.
| Inner Diameter | Best For |
|---|---|
| 6mm | Helix, Tragus, Nostril |
| 8mm | Helix, Lobe, Daith |
| 10mm | Lobe, Septum, Nipple |
| 12mm | Nipple, Navel, Septum |
| 14mm+ | Nipple, larger anatomy |
Material Guide
At No. 23 Co. Jewellery we offer a range of high-quality, body-safe materials to suit every preference and sensitivity:
- 316L Surgical Steel — hypoallergenic, durable, ideal for sensitive skin
- Stainless Steel — strong, affordable, and long-lasting
- Implant Titanium — the highest grade titanium, ultra-lightweight and hypoallergenic, perfect for new or sensitive piercings
- Sterling Silver 925 — classic and elegant, best for healed piercings
- Gold Plated — luxurious finish, suitable for healed piercings
- PVD Coated — highly durable colour coating that resists scratching, fading and tarnishing
- Copper — unique warm tone, best for healed piercings; not recommended for sensitive skin
Each product listing specifies the material used — always check before purchasing if you have known metal sensitivities or allergies.
Still Not Sure?
We're here to help! Contact us and we'll guide you to the perfect size for your piercing and anatomy. No question is too small.
