cdd7168e-c7a5-41d8-8b9d-af038d1aba9b
Slide 1 of 1
Opal 3mm Flat Back Stud
Close-up of an ear with a chunky gold hoop earring and a small pronged opal stud earring.
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
4.6
Rated 4.6 out of 5 stars
104 Reviews
Opal 3mm Flat Back Stud
$26
Gold

SINGLE

PAIR

White box with arrows, on pink circular background.

Free Shipping Over $75

Pink shield with a flower emblem inside on a circular background.

365-Day Guarantee

4.6 Star Reviews

Sleep Friendly

Hypoallergenic

Waterproof

Slide 1 of 1
Opal 3mm Flat Back Stud
Close-up of an ear with a chunky gold hoop earring and a small pronged opal stud earring.
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
4.6
Rated 4.6 out of 5 stars
104 Reviews
Opal 3mm Flat Back Stud
$26
Gold

SINGLE

PAIR

White box with arrows, on pink circular background.

Free Shipping Over $75

Pink shield with a flower emblem inside on a circular background.

365-Day Guarantee

4.6 Star Reviews

Sleep-Friendly

Hypoallergenic

Waterproof

Opal 3mm Flat Back Stud
$26
4.6
Rated 4.6 out of 5 stars
104 Reviews
Slide 1 of 1
Opal 3mm Flat Back Stud
Close-up of an ear with a chunky gold hoop earring and a small pronged opal stud earring.
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Close-up of an ear with a chunky gold hoop earring and a small pronged opal stud earring.
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
$26
4.6
Rated 4.6 out of 5 stars
104 Reviews

Trusted by over 250,000 happy customers.

SINGLE

PAIR

Gold
Opal 3mm Flat Back Stud
Opal 3mm Flat Back Stud
A white cloud icon on a circular background with a pink and orange gradient.

Sleep-Friendly

A white six-petaled flower icon on a circular pink and orange gradient background.

Hypoallergenic

Waterproof

White box with arrows, on pink circular background.

Free Shipping

Over $75

Pink shield with a flower emblem inside on a circular background.

365-Day

Guarantee

Highly

Reviewed

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!

4 Reasons Why

You Need Cords Club Flat Backs

in your life

Reason #1:

Comfort

Sleep-proof, won’t poke you, and can be worn all day and night

Reason #2:

Happy Piercings

Made from implant-grade materials that are perfect for sensitive ears

Reason #3:

No Green Skin

Waterproof, tarnish-proof jewelry that’s been tested and designed to last

Reason #4:

You + Cords Club

Join a collaborative, stylish club and share your jewelry ideas with us!

Reason #1:

Comfort

Sleep-proof, won’t poke you, and can be worn all day and night

Reason #2:

Happy Piercings

Made from implant-grade materials that are perfect for sensitive ears

Reason #3:

No Green Skin

Waterproof, tarnish-proof jewelry that’s been tested and designed to last

Reason #4:

You + Cords Club

Join a collaborative, stylish club and share your jewelry ideas with us!

Frequently Asked Question

We’ve got answers to all your Cords Club questions, from shipping to stacking.

Our Everyday Prices
are their Black Friday Prices

Moon Flat Back Stud - Compared Across 4 Brands

CORDS CLUB

$15

Moon Flat Back - Single

COMPETITOR AVG.

$36

Moon Flat Back - Single

Single Stud

Pair of Studs

Material

Hypoallergenic

Nickel-Free

Warranty

CORDS CLUB

$15

our price

$30

$27

$30

our price

ASTM F136 Titanium

ASTM F136
Titanium

365-day



BRAND A

$30

2.0x more

$60

2.0x more

ASTM F136 Titanium

ASTM F136

Titanium

none

Final Sale - no recourse

BRAND B

$38

2.5x more

$76

2.5x more

ASTM F136 Titanium

ASTM F136

Titanium

30-day

$10 fee

BRAND C

$40

2.7x more

$80

2.7x more

ASTM F136 Titanium

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

Apply Your Flat Back Studs In Seconds

New to flat backs? Watch our videos to see how simple they are to apply.

Slide 1 of 5

You May Also Like

Customer favorites that complement your everyday style.

Slide 1 of 5

SHOP BEST SELLERS

Highly Recommended for Sensitive Ears

4.6
Rated 4.6 out of 5 stars
Based on 104 reviews
Total 5 star reviews: 83 Total 4 star reviews: 12 Total 3 star reviews: 2 Total 2 star reviews: 4 Total 1 star reviews: 3
91%would recommend this product
Slide 1 selected
104 reviews
  • Rachel K.
    Verified Buyer
    2 days ago
    Rated 4 out of 5 stars
    Nose ring thoughts.

    I recently got my nose pierced and purchased this to use as a nose ring. I love the look of it but it is a little bigger than I was imagining it to be, not as petite as I was hoping, but still cute. The 6mm back length is just a little too short for my newly pierced nose, so I switched it out for an 8mm post and that works much better and is really comfortable. So, for other new nose pierced peeps like me- I recommend a little smaller stud, and the 8mm post. I have still been wearing this since I got it though!

    CC Profile picture for Cords Club
    Cords Club
    22 seconds ago

    Hi Rachel 🌸,

    Thank you so much for your detailed review of the Opal 3mm Flat Back Stud! We're so happy to hear you love the look of it ✨. We completely understand that the opal can appear a bit larger than expected—those 3mm gems do have some beautiful presence! Your feedback about the sizing is really helpful for us and for other customers who are considering this for their nose piercings 💫.

    It sounds like you figured out the perfect solution with the 8mm post length for your fresh piercing! That kind of detailed feedback about post length is incredibly valuable for other new nose piercing enthusiasts who might be in the same situation 😊. We're so glad you found a way to make it work comfortably and that you're still loving wearing it!

    Thank you for sharing these helpful tips for others with new nose piercings—your experience will definitely help fellow customers make the best choices for their healing journey 🌼.

    • JM with Cords Club
  • Avery H.
    Verified Buyer
    1 week ago
    Rated 5 out of 5 stars
    Love!

    These go with everything and are just the spring/summer cherry on top of my ear stack! :)

    CC Profile picture for Cords Club
    Cords Club
    1 week ago

    Hi Avery 🌸

    We absolutely love that the Opal 3mm Flat Back Studs are the perfect "spring/summer cherry on top" of your ear stack — what a delightful way to describe them! ✨ There's something so magical about opals and how they catch the light with those beautiful flashes of color, making them the ultimate versatile piece that truly does go with everything 💫. They're such a gorgeous way to add that subtle sparkle and elegance to any ear composition.

    Thank you for sharing the love and for choosing Cords Club 💖

    😘~ Elvie with Cords Club

  • Mica R.
    Verified Buyer
    2 months ago
    Rated 3 out of 5 stars
    The prongs are my worst enemy

    It is so beautiful on! But the prongs get caught on every single thing that it ever comes in contact with. Pillow case, hair, hats, the list goes on.

    CC Profile picture for Cords Club
    Cords Club
    2 months ago

    Hi Mica! 😊

    Thanks so much for the honest feedback about the Opal 3mm Flat Back Stud! We're so happy to hear it looks beautiful on you—that's exactly what we love to hear! 💕 We totally understand the frustration with the prongs catching on things like pillowcases and hair though, and we really appreciate you sharing that experience. It's super helpful feedback as we think about design details that make jewelry both gorgeous and comfortable for everyday wear. We're glad you still find them beautiful despite the snagging! ✨

    • JM with Cords Club
  • Matthew C.
    Verified Buyer
    2 months ago
    Rated 5 out of 5 stars
    Simple and beautiful

    This is the perfect addition to a stack. I love the opal and gold combo

    CC Profile picture for Cords Club
    Cords Club
    2 months ago

    Hi Matthew!
    Simple + beautiful is such a perfect combo ✨ the opal and gold really do make the most gorgeous stack addition! 💕
    ✨ Jace with Cords Club

  • Lisa K.
    Verified Buyer
    3 months ago
    Rated 5 out of 5 stars
    :)

    I was missing an earring and this replaced it perfectly. I’m also having fun with the mismatch look so this was a cute add on to the others. I had to get the longer one though so make sure you know your size before purchasing :)

    CC Profile picture for Cords Club
    Cords Club
    3 months ago

    hi Lisa!
    Yay! 😊 I'm so happy to hear it was the perfect replacement for your missing earring — and that you're having fun with the mismatch look! That sounds so cute! Thanks for the helpful tip about sizing too. ✨
    🌸 Jace with Cords Club

Top-Tier Customer Service

Have questions? Our amazing in-house customer service team is ready to answer them!

10,000+ Verified 5-Star Reviews

Loved by thousands of happy ears (and counting).

Fast & Secure Shipping

Get your orders ASAP. Our in-house shipping team packs all orders within 1-2 business days! 

365-Day Warranty

We stand by every Cords Club product’s durability & quality. Try risk free, today!

Love Flat Backs?

Two Studs for the Price of One. Every Month.

Customer Favorite

Get exclusive monthly styles & member only savings.

Don’t Miss

The Next Box

PAST DESIGN

Hand holding an orange box labeled 'Cords Club' on a pink gradient background.
Studs of the Month Box
$30.00

($50+ value)