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Luxury Packaging with Every Order

Luxury Packaging with Every Order

Every order arrives beautifully presented with our luxury packaging:

A signature velvet pouch designed to protect your jewellery and be kept forever

A Promise Card ready for you to write your own special promise, to a loved one, a friend... yourself!

Thoughtful. Gift-ready. Worth paying for but included free.

Delivery & Shipping - UK

Delivery

Delivery & Shipping - UK

Orders are shipped Monday–Friday.

Any orders placed after 1pm (local warehouse time) on Friday will not be shipped until Monday.

UK Shipping (from our UK warehouse)

Royal Mail 48 Hours: Delivery in 2 working days.

Royal Mail 24 Hours: Delivery in 1 working day (order before 1pm GMT to receive your parcel the next working day).

Our Size Guide

Our Size Guide

Not sure on your sizing? Need to secretly measure for a loved one? Find our handy printable PDF.

US/Promise Co Diameter (mm) Circumference (mm) UK Europe
4 14.9 46.8 H ½ 47
5 15.7 49.3 J ½ 49.3
6 16.5 51.9 L ½ 51.9
7 17.3 54.5 N ½ 54.4
8 18.1 57 P ½ 57
9 18.9 59.5 R ½ 59.5
10 19.8 62.1 T ½ 62.1
11 20.6 64.6 V ½ 64.6
12 21.4 67.2 X ½ 67.2
13 22.2 70 Z ½ 70

We started with a question:

What does it really mean to make a promise?

And why hadn’t the jewellery industry evolved to reflect the depth and diversity of the promises we make today?

Traditionally, promise rings were tied to romantic milestones. And while we’ll always celebrate those love stories – they’re at the heart of so much of what we do – we also knew there was more. Because in real life, promises aren’t one-size-fits-all.

They can be quiet and steady. Fierce and full of hope. A vow to begin again. A bond between best friends. A reminder to keep going.

We didn’t see jewellery that spoke to those promises.

So we created it

At The Promise Co., we’re here to redefine what a promise ring can be. To move beyond tradition and make space for the full spectrum of what it means to care, to commit, and to believe in something – or someone.

This is jewellery that honours all kinds of promises. The big ones. The quiet ones. The ones you share and the ones you keep just for yourself.

We’re not just building a brand

We’re building a movement

Rooted in real stories, personal meaning, and the idea that something small can hold something enormous.

A promise ring is your own wearable story. A reminder of who you are, and everything you're becoming.

Whats your promise?

Whats your promise?

A note from the founder

I've always felt that jewellery should mean something. The pieces we keep close aren’t just beautiful, they become little anchors in our lives. Reminders of who we are, where we’ve been, and what matters most. The ring from my Nan that’s never left my finger. The one my partner Raj gave me when we made our first promise. The piece my mum had made for my 21st – filled with pride and love. They’re more than just pieces of jewellery. They hold meaning. And they’ve stayed with me through everything.

That’s what I wanted to create with The Promise Co. – jewellery that does the same for you. What started as a simple idea, rooted in my love for sentimental jewellery, has grown into something far bigger than I ever imagined. Every day, I get to witness your promises – to your partner, your sister, your oldest friend. And to yourself. You trust us with the most personal, powerful moments of your life – and that never stops feeling like the greatest privilege.

So thank you, truly, for being part of this. You are the reason this brand exists.