Country
Gifts for Her
Gifts for Her
Ethereal Summer
Ethereal Summer Collection
Login
Shop All
Gifts for Her
Gifts for Her
Ethereal Summer
Ethereal Summer Collection
Shop All
Gifts for Her
Gifts for Her
Ethereal Summer
Ethereal Summer Collection
Shop All
Shop All
Shop All
Shop All
Shop All

Cart - Items are not reserved until payment

Your cart is empty

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

All collections

The Promise Co. Oval Solitaire diamond simulant ring. Promise Ring for her.

All products
The Promise Co. Oval Solitaire diamond simulant ring. Promise Ring for her.

Best Sellers Edit
The Promise Co. Oval Solitaire diamond simulant ring. Promise Ring for her.

Best Selling Products
Zig-Zag flash Promise ring in Sterling Silver. The Promise Ring Co.

Biggest Discounts
Unique toi et moi promise ring with pear cut stones – handcrafted and meaningful

BLACK FRIDAY

Bracelets

Coloured Stones

Couples Promise Rings
Cushion cut solitaire ring with a bold gold cigar band – a statement piece and perfect gift for her by The Promise Co.

Cushion Cut Promise Rings
Emerald cut 3ct diamond simulant solitaire promise ring in 18ct gold vermeil

Emerald Cut Promise Rings
The Promise Co. Cluster band diamond simulant ring. In 18ct Gold Unique handcrafted promise ring with alternating marquise stones – affordable stacking band in gold

Eternity Band Promise Rings

Ethereal Summer
18ct gold vermeil emerald cut eternity ring – a timeless wedding band and affordable emerald cut promise ring.

Flik Shaw x The Promise Co.

For Him
The Promise Co. Cluster band diamond simulant ring. In 18ct Gold Unique handcrafted promise ring with alternating marquise stones – affordable stacking band in gold

For You
East West Half Bezel Marquise Ring elegant as a bestie ring or pinky promise ring

Friendship Rings
sterling silver sparkle oval ring on sparkle band, promise ring

Gifts for Her
The Promise Co. Oval Solitaire diamond simulant ring. Promise Ring for her.

Gold Promise Rings
Gold heart-shaped pendant necklace on a white background

Heart Necklace & Ring Set

Heart Shaped Promise Rings
Best affordable promise ring for her marquise cut stone Selena Gomez Dupe

Marquise Cut Promise Rings

Mens Promise Rings

Mixed Eternity Bands
The Promise Co. Cluster band diamond simulant ring. In 18ct Gold Unique handcrafted promise ring with alternating marquise stones – affordable stacking band in gold

Mixed Stone Band Promise Rings

New in
The Promise Co. Oval Solitaire diamond simulant ring. Promise Ring for her.

Oval Promise Rings

Pear Cut Promise Rings
East West Half Bezel Marquise Ring elegant as a bestie ring or pinky promise ring

Pinky Promise Rings
Unisex signet ring with a rectangular face in rhodium-plated sterling silver – a unique signet ring and modern men’s promise ring by The Promise Co.

Plain Band Promise Rings
Trinity necklace dupe 14ct gold perfect gift for her

Promise Necklaces

Promise Rings
Gold promise ring with east-west design – elegant stacking band for everyday wear

Promise Rings for Teenagers

Promise Threads

Push Presents
Radiant cut gold promise ring with pavé band – elegant and affordable gift for her

Radiant Cut Promise Rings

Round Cut Promise Rings

Russian Band Promise Rings
The Promise Co. Oval Solitaire diamond simulant ring. Promise Ring for her.

Shop All
The Promise Co. Oval Solitaire diamond simulant ring. Promise Ring for her.

Silver Promise Rings
Emerald cut 3ct diamond simulant solitaire promise ring in 18ct gold vermeil

Simple Solitaires Collection
Emerald cut 3ct diamond simulant solitaire promise ring in 18ct gold vermeil

Solitaire Promise Rings
The Promise Co. Cluster band diamond simulant ring. In 18ct Gold Unique handcrafted promise ring with alternating marquise stones – affordable stacking band in gold

Stackable Promise Rings
The Promise Ring Co. Emerald Green Promise Ring on 18ct Gold Vermeil Band

The Vault Sale

Thin Band Promise Rings