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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

Delivery

Delivery & Shipping

Orders are shipped Monday–Friday.

Any orders placed after 1pm (MST) 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).

USA Shipping (from our USA warehouse)

Orders ship via DHL Express Domestic. Delivery takes 1–4 working days, depending on your shipping zone.

All tariffs and import fees are already covered by The Promise Ring Co. LTD, so there are no additional customs charges for US customers.

International Shipping (all other countries from our UK warehouse)

Europe: 2–11 business days.

Rest of the World (Canada, Australia, etc.): 3–17 business days.

Please note: Delivery times are estimates and may occasionally be extended due to customs delays, courier disruptions, or UK bank holidays.

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
2 13.3 41.7 D ½ 42
3 14.1 44.2 F ½ 44
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

Custom Pinky Rings

Choose from 12 birthstone colors, add your engraving & we’ll hand-set it especially for you.
Join 10,000+ people who've already made their Promise.
Step 1Choose a design to make your own
Step 2Select precious metal & size
Step 3Choose your stones & engraving
Made For youOur master jewellers hand-set your piece

Sort by

4 products

Viral Pinky Ring
Promise Heirloom Birthstone Ring Sale price$284.00
Pavé Pinky Promise Ring Sale price$284.00
New
Promise Legacy Birthstone Ring Sale price$323.00
Birthstone Pear Ring Sale price$212.00

STYLED BY YOU

Ready to make your Pinky Promise?

Our BirthStones

  • Garnet birthstone

    Garnet

    January

  • Amethyst birthstone

    Amethyst

    February

  • Aquamarine birthstone

    Aquamarine

    March

  • Diamond Simulant birthstone

    Diamond Simulant

    April

  • Emerald birthstone

    Emerald

    May

  • Lavender birthstone

    Lavender

    June

  • Ruby birthstone

    Ruby

    July

  • Apple Green birthstone

    Apple Green

    August

  • Sapphire Blue birthstone

    Sapphire Blue

    September

  • Pink birthstone

    Pink

    October

  • Champagne birthstone

    Champagne

    November

  • Tanzanite birthstone

    Tanzanite

    December

From power to Promise

Because the pinky has always meant something.

For centuries, signet rings were worn as symbols of identity, family, status and power.

Kings, politicians and people of influence wore them on their little finger A tiny ring that said:

This is who I am.

We loved that.

But instead of wearing somebody else's history, we wanted to create jewellery that could hold your own.

 THE PROMISE RING, REINVENTED 

Promise rings have existed in different forms for hundreds of years.

But somewhere along the way, the promise ring became defined almost entirely by romantic relationships - often as the ring before the ring.

We wanted to change that.

When we created The Promise Co., we built a new world around what a promise could mean.

A promise to your partner, to your best friend, to your family.

And, perhaps most importantly, a promise to yourself.

todays modern promise

The smallest finger has always carried more weight than you might expect.

Historically the home of the signet ring - a piece designed to represent exactly who its wearer was - the pinky feels like the natural home for a modern promise.

Not a placeholder for an engagement.

Not something defined by anybody else.

Something chosen by you, for whatever matters to you.

Your finger. Your story. Your promise.