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.

Orders are shipped Monday–Friday.

Any orders placed before 1pm (Mountain Standard Time) are usually dispatched on the same day, Monday–Friday.

USA Shipping (from our USA warehouse)

Orders ship via DHL Express Domestic and Tariff free. Delivery takes 1–4 working days, depending on your state.

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

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

Plain Band Promise Rings

Shop our Plain Band Promise Rings - simple, timeless designs crafted in 18ct gold and rhodium-plated sterling silver. Elegant and versatile, these bands are perfect for everyday wear, a subtle promise, or a modern take on a classic commitment ring.