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Herkimer Diamond Necklace or Bracelet

Herkimer Diamond Necklace or Bracelet

Sunday Forever NYC

Regular price $122.00 USD
Regular price Sale price $122.00 USD
Sale Sold out
Shipping calculated at checkout.

Are they REAL diamonds? Nope… but, in our humble opinion, they’re just as magical and have so much character. They’re technically considered to be a form of double-terminated quartz which is an added energetically enriched bonus!

In any case, if you can’t make it over to Herkimer County, New York - we’ve done the heavy and very sparkly lifting for you. Choose from a Necklace or Bracelet:

Herkimer Diamond Necklace: delicate and the perfect addition to your collection. The necklace features 11 tiny herkimer diamonds delicately strung on 100% silk cord and finished with a 14k gold filled lobster claw clasp. Made 15" long but can be made to order if you'd like a different length. Simply leave a note at checkout. 

Our Herkimer Diamond Bracelet: features a single stone on our signature red string, adjustable bracelet. Each one arrives perfectly packaged and as always, is made with love and attention to detail. Charm jewelry that adds to your stack for protection and good vibes.

The perfect gift for yourself or someone special awaits, and arrives perfectly packaged in our nice things snap case jewelry holder, 100% cotton Nice Things cotton pouch and a beautiful description card. We love a detail.

*Please note each Herkimer diamond is unique. Each diamond varies in size, shape, clarity, and has natural deformities making it special to you.

The Details

All of our jewelry is loving made and packed in our NYC studio.

Your piece arrives to you perfectly packaged in our Nice Things reusable snap front jewelry holder and 100% cotton Nice Things Inside pouch.


How do I adjust my bracelet? 

Watch a video tutorial here.

What happens if my jewelry breaks?

We offer a jewelry restringing service should you ever need a refresh. You can find that here.

Any other questions?

We're here for you. Send us a note at

Care Instructions


The majority of our charms are gold filled, which is top quality and only second to solid gold, so they're slower to tarnish than other materials. However, how long your bracelet or necklace lasts without turning depends on 3 main things:

  • What touches it: If your bracelet or necklace comes in consistent contact with chemicals (for example: chlorine, bleach, sanitizers, fragrances, sunscreen) this can cause it to tarnish more quickly.
  • Your body chemistry: Everyone has different levels of hormones that react differently to gold filled products. People with higher hormonal levels tend to have their jewelry turn faster. If you sweat a lot, this can have an effect on how quickly your jewelry tarnishes too!
  • How you store/care for your jewelry: Less airflow allows for lesser chance of oxidization (which is one of the reasons for tarnishing). For example, if you live in a humid environment, it may be best to store your pieces in a tight sealed zip lock bag overnight as an extra precaution. We also suggest reducing tangles- the less tangled your pieces is with other jewelry- the longer it will last without tarnishing!

Remember - we love the worn-in look so we wear our jewelry during workouts, showers, while we're sleeping (aka we never take them off). These are just the facts behind what could potentially cause your bracelet to lose some of that shine!


While we don't typically clean our Sunday Forever jewelry pieces (we like ours looking worn and lived-in), you can gently clean them daily.

If you would like to clean your Sunday Forever pieces, we suggest giving it a quick rinse in lukewarm water and then drying with a soft cloth. This will help prevent tarnishing from factors like makeup, sweat, sunscreen aka things that come in contact with you jewelry daily. 


This is a personal choice. We choose to never take off our bracelets, necklaces or anklets. They can withstand quite a bit of wear and tear but if you're concerned about them turning a bit or getting dirty, you should probably remove them. We like them to look worn and broken in, it gives them character :)

Shipping & Returns

It's our mission to get your nice things to you asap and make sure you love what you've got, and are thrilled to offer free shipping on orders over $100 and hassle-free returns.


We pull our orders at 10am EST each day (excluding Wednesdays, Saturdays, and Sundays).

If you selected USPS Standard Shipping (or Free Shipping), your order will typically ship within 1 to 2 business days of when it was placed. Any orders with red string jewelry may take an additional 5 to 7 business days to process. If you need your order by a certain date, please leave a note at checkout or reach out to and we'll do our best to prioritize it.

If you selected Fedex 2-Day or Fedex Standard Overnight, your order will ship the following business day.


For an exchange or return, please click here and we'll get you sorted. All returns have a $5 shipping and re-stocking fee. Exchanges are free.

Please note we can not accept returns for any custom items (i.e. embroidered robes & custom jewelry).

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Customer Reviews

Based on 5 reviews
K. (Queens, US)
the epitome of Nice Things

so delicate, dainty, and special.

Anna Brothers (Ellsworth, US)

Thank you so much. Loved getting nice things in the mail today; totally made my day! My week!

Georgina Fierro (San Diego, US)
It was amazing!!

Everything about was simply amazing, I love how simple and beautiful it is. I haven’t taken it off since I received it. The packaging was lovely too!!😍
Thank you again! ♥️

Hi Georgina! Eileen here. Thank you so much for the review! Our Herkimer Diamond Necklace is so chic - I bet it looks amazing on you xx

Denise Rogers (Pearland, US)
💕 love

Just like the previous reviewer said “ goes with everything “!!! It Really does. It’s so beautiful and unique - this necklace is such a keeper- and I definitely won’t be taking this off. Now I need the bracelet! Packaged Beautifully and with so much care!

Mimi Anderson (Tucson, US)
So sweet

I just love this little necklace. So dainty, great layering piece. Goes with everything. Just beautiful.

Stack. Collect. Gift. REPEAT.

Whether you design something custom or shop our best selling classics, all Sunday Forever jewelry arrives to you perfectly packaged in our Nice Things reusablesnap front jewelry holder and 100% cotton Nice Things Inside pouch.


    SUNDAY FOREVER is a small female founded and run business based in NYC. The brand was born in 2016 out of a desire to make perfectly packaged, nice things that could be delivered to your doorstep or to someone special. 

    To this day we pack and ship every single order from our studio with our very own human hands. We create and design everything in house and our customers and community are the reason we exist. We aim to delight you.


    From our handmade signature red string jewelry to silver and 14k gold favorites, all Sunday Forever pieces are made to be worn for protection and luck.

    Stack them, collect them, gift them.

    Choose from our classic best-selling designs or select your charms and we'll make it custom. From evil eyes to horse shoes, zodiacs and letters, the meaningful possibilities are endless.