
Astrid Star Flat Back Labret Stud Silver
NICKEL FREE HYPOALLERGENIC
LIFETIME GUARANTEE
WATERPROOF
CERTIFIED
PIERCER APPROVED
A beautiful Northern Star cartilage stud featuring a sparkling crystal stone centre. Perfect for creating a celestial themed curated ear stack. Crafted with Implant grade ASTM F136 titanium, the number one choice for piercing jewellery.
Suitable for: Helix, Flat, Conch, Tragus, Forward Helix
Size & Materials:
- 16 Gauge, 1.2mm bar thickness. 6mm or 8mm post length.
- Implant grade ASTM F136 titanium
- Internally threaded, front screwing stud on both ends
- Hypoallergenic
- No Nickel
- Waterproof & Sweat proof
- Piercer Approved
- Lifetime colour guarantee
Shipping and Delivery
Enjoy complimentary shipping on orders over £50.
All orders placed before 12pm are prepared and shipped the same day.
We offer Tracked 24 and Tracked 48 delivery via Royal Mail.
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ANCHOR CERT PRO 2 CERTIFIED
Independently Tested By The Assay Office
Our implant-grade titanium flat back labret studs are independently tested by the Birmingham Assay Office and certified to AnchorCert Protect standards a specialist hypoallergenic jewellery testing programme designed to assess skin safety, allergen risk, and regulatory compliance.
Unlike basic jewellery testing that focuses only on nickel, AnchorCert Protect screens for a wider range of metals recognised as potential skin sensitisers and allergens.
Our jewellery has been tested for:
- Nickel release
- Lead content
- Cadmium content
- Additional recognised allergenic metallic elements
All tested samples passed:
- European REACH compliance
- AnchorCert Protect compliance requirements
This means the jewellery meets strict standards for skin contact safety and is considered suitable for sensitive skin.
Need help?
Frequently Asked Questions
Order
A flat back labret is a type of piercing jewellery with a smooth flat disc backing instead of a butterfly back. They’re designed for a more comfortable fit, especially for cartilage piercings and everyday wear.
Yes all of our flat back labrets are internally threaded, meaning the decorative front screws into the post from the front. This creates a smoother, more comfortable fit and is considered the preferred option for piercing jewellery.
Flat back labrets are inserted from the back of the ear, with the front piece screwing on from the front. They can feel fiddly at first, especially in cartilage piercings.
If you struggle changing your jewellery, our jewellery changing toolS including our Stud Grabber Tool and Insertion Taper are designed to make the process much easier.
Our most popular sizes are:
6mm — ideal for most healed cartilage piercings
8mm — offers a little more room depending on anatomy or placement
Because everybody’s anatomy is different, we also sell 5mm, 6mm, 8mm and 10mm spare posts for a more customised fit.
Yes our spare internally threaded posts are designed so you can change your post length without re-buying the entire stud. All compatible Cartilage Cartel flat back fronts can be interchanged with our spare posts.
Yes our implant-grade titanium flat back labrets are hypoallergenic, nickel free, waterproof, sweat proof, and piercer approved, making them ideal for sensitive ears and long-term wear.

About
VIRTUAL TRY ON
Choosing your ear shouldn’t feel overwhelming or like a guessing game.
- Try on jewellery before you buy
- Style your stack piercing by piercing
- Plan your next piercing
- Upload your own ear or choose a model ear
- Save your stacks
- Download & share your looks
The Ultimate FLATBACK TOOLKIT







