Opal 3mm Flat Back Stud

Q: What size are the flat back earrings?

Cords Club's Flat Backs are 18 gauge and come with a 6mm long Flat Back post.A 6mm post is a great length for most people, so we'd recommend starting there! We do also have a range of other sizes available and sold separately. If you have questions about sizing, we'd love to help!

Q: Are your flat backs sold individually? Or in pairs?

Both! Grab a single if you’re mixing and matching, or a pair to save 10%

Q: Do I need to buy the flat back applicator, too?

Our Flat Back Applicator is a great tool but it's not necessary! The Flat Back Applicator is designed to help make the process of changing your flat backs faster and easier, but you can definitely change your earrings without one. The choice is totally up to you!

Sleep-Friendly

Hypoallergenic

Waterproof

DESCRIPTION

This listing is for a single ASTM-F136 implant grade titanium push-pin flat back stud.

Post measures at 1/4" (6mm) in length. 18 GA.

Synthetic opal is approx. 3mm in diameter and is secured in place with prongs. Prongs may snag hair/clothing. Please be careful while wearing these! (Note that it is the larger opal pictured on the model with 2 opal studs. The smaller opal is our 2mm option)

Metal Colors Available: 18K PVD Gold Plated Titanium, Titanium

CARE

Soak your studs in warm water with a few drops of dish soap for about 15 minutes. Gently clean with a soft cloth and store safely.

365-DAY GUARANTEE

At Cords Club, we are committed to providing durable and high-quality products. That's why we offer a 365 Day Guarantee on all our items. If you experience any defects or issues within the first year, simply contact us for a hassle-free replacement. Enjoy peace of mind and shop with confidence knowing that your satisfaction is our top priority!

LIGHTNING-FAST SHIPPING

Our in-house shipping team carefully packs and ships orders within 4 business days. During peak launches, please allow extra time.

Free Shipping Over $75

Free Shipping
Over $75

365-Day Guarantee

365-Day
Guarantee

Highly Reviewed

Highly
Reviewed

I'm new to flat backs. What is the most important thing for me to know?

The first thing you'll want to learn is how to keep your Flat Backs nice and secure. Just like you'd tie your running shoes to make sure they stay on your feet for a run, you'll need to adjust your Flat Backs to keep them in place, too!

But don't worry! It's an easy peasy process, and we'll help you through the learning curve. <3

Here are a few resources to get you started:

Review the Flat Back tips and tricks info guide included with your order
Check out this helpful playlist of how-to videos
Connect with our customer service team for personalized help

What size are the flat back earrings?

Cords Club's Flat Backs are 18 gauge and come with a 6mm long Flat Back post.

A 6mm post is a great length for most people, so we'd recommend starting there! We do also have a range of other sizes available and sold separately. If you have questions about sizing, we'd love to help!

Are your flat backs sold individually? Or in pairs?

Both! Grab a single if you’re mixing and matching, or a pair to save 10%

Do I need to buy the flat back applicator, too?

Our Flat Back Applicator is a great tool but it's not necessary! The Flat Back Applicator is designed to help make the process of changing your flat backs faster and easier, but you can definitely change your earrings without one. The choice is totally up to you!

Trusted by Over a Quarter Million Happy Ears

A close-up of an ear with multiple silver piercings, including heart, bow, and gem-shaped earrings.

Tia C.

Verified Customer

Perfect for almost any piercing! I’ll use it elsewhere once I add more piercings to my ears! Love!!

Amanda H.

Verified Customer

Everyone needs this one!!!

This tiny bow is so dainty and cute! Perfect size for my stacked lobe

Alison B.

Verified Customer

Looks so cute in my forward helix! Will likely get another one for my newest forward helix, I love her!

Andrea S.

Verified Customer

I wear these almost everyday. They're cute but also lightweight so I don't feel like they're stretching my ears at all

Briana C.

Verified Customer

Sparkly!! Gorgeous little hoops! They shine super bright, and are super comfortable!

Reason #1:ComfortSleep-proof, won’t poke you, and can be worn all day and night

Reason #2:Happy PiercingsMade from implant-grade materials that are perfect for sensitive ears

Reason #3:No Green SkinWaterproof, tarnish-proof jewelry that’s been tested and designed to last

Reason #4:You + Cords ClubJoin a collaborative, stylish club and share your jewelry ideas with us!

CORDS CLUB

$15

Moon Flat Back - Single

COMPETITOR AVG.

$36

Moon Flat Back - Single

Feature

Single Stud

Pair of Studs

Material

HypoallergenicNickel-Free

Warranty

CORDS CLUB

$15our price

~~$30~~$27 our price

ASTM F136 Titanium

365-day

BRAND A

$302.0x more

$60 2.0x more

ASTM F136 Titanium

noneFinal Sale - no recourse

BRAND B

$382.5x more

$76 2.5x more

ASTM F136 Titanium

30-day$10 fee

BRAND C

$402.7x more

$80 2.7x more

ASTM F136 Titanium

365-day

Comfortable For 24/7 Wear
Sleep, Shower, And Workout Friendly
Hypoallergenic And Nickel Free
Lightweight And Secure

Comfortable For 24/7 Wear
Sleep, Shower, And Workout Friendly
Hypoallergenic And Nickel Free
Lightweight And Secure

Comfortable For 24/7 Wear
Sleep, Shower, And Workout Friendly
Hypoallergenic And Nickel Free
Lightweight And Secure

How To Apply

Flat Back Studs

How To Remove

Flat Back Studs

How To Apply Flat Back Studs With An Applicator

How To Tighten

Your Flat Backs

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Highly Recommended for Sensitive Ears

4.6

Rated 4.6 out of 5 stars

Based on 109 reviews

91%would recommend this product

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109 reviews

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Allison
2 days ago
Rated 5 out of 5 stars
5 Stars
perfect
Was this helpful?
CC
Cords Club
4 minutes ago
Hi Allison,
A timeless little sparkle that fits beautifully into any stack. We’re so glad the Opal 3mm Flat Back Stud was just right for you. Thank you for the lovely review and for your wonderful 5-star rating. 🤍💎🌈✨
–Hope with Cords Club
Maggie
1 month ago
Rated 4 out of 5 stars
4 Stars
Super cute! Still figuring out the nose jewelry its hard getting the backside on but I’ll figure it out!!
Was this helpful?
CC
Cords Club
1 month ago
Hi Maggie! 🧡✨
Thank you for your cheerful review of the Opal 3 mm Flat Back Stud. ⭐ We’re delighted to hear you find it super cute and exactly what you wanted. We understand nose jewelry can take a little practice, especially with the back piece, but we’re glad to know you’re figuring it out and enjoying the process. 🧡
It’s wonderful to hear this stud has brought you joy, and we appreciate you sharing your experience with us. 😊
–Hope with Cords Club
Alicia S.
Verified Buyer
1 month ago
Rated 3 out of 5 stars
Stone fell out
This was one othe worst quality pieces I got from cords unfortunately the stone kept falling out. I was able to glue it back in eventually. But not my favorite.
Was this helpful?
CC
Cords Club
1 month ago
Hi Alicia,

Thank you for sharing your feedback, and we're really sorry to hear that the stone fell out of your Opal 3mm Flat Back Stud. We understand how frustrating that must be, especially when you were looking forward to enjoying the piece.

This type of issue is covered under our 365-day warranty, and we'd love the opportunity to look into this and help make it right. Please reach out to our customer support team at hello@cordsclub.com with your order details so we can assist you further.

Thank you for giving us the chance to resolve this.

JM with Cords Club
EMILY C. D.
Verified Buyer
2 months ago
Rated 5 out of 5 stars
Love love love!!
Super cute!
Was this helpful?
CC
Cords Club
2 months ago
Hi Emily!
So thrilled you're loving the Opal 3mm Flat Back Studs 💖! We're so glad they're hitting that cute factor for you ✨. Thanks so much for the love!
—☀️ Jace with Cords Club
Celeste B.
Verified Buyer
3 months ago
Rated 5 out of 5 stars
Gorgeous opals!
I am so glad I purchased these. They bring an absolutely stunning luster to my stack. Luminous and bright, they bring a warm glow while also bringing an unexpected pop of color. They are so neutral they go with everything! I wore them to a professional work retreat and got so many compliments from my peers. I love that they are versatile enough to wear to a leadership event and then head out to the pool or lake. They are so comfy to wear I usually forget I have them in. Love love love! Now I need them in a few more sizes so I can do all three lobes in opal from Cords Club! I also got the marquise for my helix once it is fully healed.
Was this helpful?
CC
Cords Club
3 months ago
Hi Celeste!
Your review has us absolutely glowing! I love how you described the luminous quality of the opals—they really do have that magical way of bringing warmth and unexpected pops of color while staying so beautifully neutral. And getting compliments at your work retreat? That's the perfect testament to how versatile and stunning they are! It sounds like you've got some amazing plans for your stack with multiple sizes, and the marquise for your helix is going to be such a gorgeous addition once it's healed. Your opal collection is going to be absolutely dreamy!

JM with Cords Club