Opal Prong-Set Curved Barbell
FTN-3OPL-PR-18-YG-1-4
SIZING PIERCING JEWELRY
When shopping for the perfect piece of body piercing jewelry you'll need to know what size you need. Here's some info to help you discover your perfect fit.What is "Gauge"?
The "gauge" of your piercing is the thickness of the bar that goes through your piercing. In other words, it's the barbell's thickness. *Note that the thicker the barbell, the lower the gauge size. So a 12 gauge (or 12G) barbell is much thicker than a 20 gauge (20G) barbell.Piercing Jewelry "Length":
The 'length' of your piercing jewelry refers to the "wearable" span of the barbell that goes through your piercing. It is measured from the top to the bottom of the straight or curved barbell and excludes the balls or charms.
![]() |
![]() |
![]() |
![]() |
Piercing Jewelry "Diameter":
The 'Diameter' is used to measure the size of round barbells such as hoops, captives, clickers, seam rings, and circulars. It is measured from the innermost and widest point of the circle, inside the hoop.
![]() |
![]() |
STANDARD PIERCING SIZES
Check out our chart below to discover the standard fit for different piercings. Just like clothing, piercing sizes vary from person to person, so the 'standard' size might not be right for you.
*Tip: Measure the size of your current piercing jewelry to ensure you're getting the correct size for your piercing.
Piercing | Standard Gauge | Standard Length |
---|---|---|
Belly Button / Navel Ring | 14G | 3/8" , 7/16" |
Nose Piercing | 20G , 18G | 1/4" , 5/16" |
Tongue Piercing | 14G | 5/8" |
Cartilage Piercings (Helix, Forwad Helix, Tragus) |
16G , 18G | 3/16" , 1/4" and 5/16" |
Eyebrow Piercing | 16G (14G is also commonly used) | 1/4" , 5/16" and 3/8" |
Industrial Barbell | 14G (16G is also commonly used) | 1 1/2" (varies) |
Labret Lip Rings | 14G or 16G | 1/4" , 5/16", and 3/8" |
Monroe Piercing | 16G | 1/4" , 5/16" and 3/8" |
Nipple Piercing | 14G | 3/8" , 1/2", 9/16" |
Rook / Conch / Daith | 16G , 18G | 3/16", 1/4" , 5/16" and 3/8" |
Septum | 14G (16G is also commonly used) | 3/8", 7/16", 1/2", and 5/8" |
Ear Lobe Piercings | 20G or 22G |
Gauge To Inches & Millimeters Conversions
Please find a conversion charts below for those of you using the metric system.
Gauge |
Inches |
Millimeters |
22G |
0.025 |
0.64mm |
20G |
.032" |
0.81mm |
18G |
.040" |
1.0mm |
16G |
.050" |
1.2mm |
14G |
.064" |
1.6mm |
12G |
.082" |
2.0mm |
10G |
.102" |
2.5mm |
8G |
.125" |
3.0mm |
6G |
.162" |
4.0mm |
4G |
.204" |
5.0mm |
2G |
.250" |
6.0mm |
0G |
.312" |
8.0mm |
00G |
.375" |
10.0mm |
Length & Diameter Conversion
Inches |
Millimeters |
3/16" |
4.7 |
1/4" |
6.4 |
5/16" |
8 |
3/8" |
9.5 |
7/16" |
11 |
1/2" |
13 |
9/16" |
14 |
5/8" |
16 |
3/4" |
19 |
7/8" |
22 |
15/16" |
24 |
1" |
25 |
1 1/2" |
38 |
- In stock, ready to ship
- Inventory on the way
Ships in
- Solid 14K Gold | 100% Nickel-free
- Ethically Sourced Materials
- Free shipping orders $100+
- 2-Year Warranty
- Handcrafted in LA
- Synthetic opals
- 3mm opals for 18G & 16G barbell
- 4mm opals for 14G barbell
- Solid 14k gold
- Hypo-allergenic / nickel-free
- Internally threaded barbell
- Available in yellow, white, and rose gold
- Choose from several gauges and lengths to suit a variety of different piercings
- Custom made to order
- Custom sizesavailable upon request
- Handmade in the USA
Gemstone type | Opal |
Gemstone nature | Synthetic |
Gauge | 18G (1.0mm) |
Length | 1/4" (6mm) |
Threading type | Internal |
Piercing type | Cartilage , Tragus , Rook , Daith |
14k Solid Gold | 950 Platinum:
Our gold and platinum jewelry is made with your piercing in mind. We exclusively use 100% nickel-free metals to ensure the well-being of your piercing.
Recycled Metals: Our jewelry is proudly crafted using SCS-certified recycled gold and platinum, guaranteeing sustainability without compromising quality.
Natural Diamonds & Gemstones: Our natural stones are sourced from suppliers who adhere to safe raw material extraction practices and ethical treatment of workers.
United States Free Shipping for orders over $100. Orders under $100 ship for $6.49.
International Shipping costs vary based on destination; calculated at checkout.
Production Time Piercing jewelry is handmade to order unless otherwise stated. Production times vary. Shipping time is applied after the order has been processed.
Returns/Exchanges We accept exchanges on unworn merchandise. Read Full Return Policy.