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Ring Size Chart

Your partner’s dream ring has been chosen – it’s the ideal style and design, and it falls within budget. There’s only one element left to confirm and it’s a crucial one, too. What’s the size of the ring? Don’t underestimate the importance of getting the correct size. Too large and it will slide right off your loved one’s finger; too small and it won’t even get past the knuckle; it might even get stuck.


Confidential Purchase

If you do not know the ring size of the person you are purchasing the ring for and want to keep the purchase a secret, please select "I don't know" and proceed with the purchase. Afterwards please contact us and we will help you to determine the best course of action. Once a ring has been presented, the ring can always be adjusted to the correct size.

Alternative Method

If your purchase is not confidential, there are a number of alternatives to finding the correct finger size:

  • Go into any local jewellery store and have the finger size measured

  • Visit our showroom (strictly by appointment) for an accurate finger size measurement

*Please note: Any manual method of determining the size such as measuring the circumference of the finger may result in inaccuracies. Please read our resizing policy for the costs of resizing a ring.

Ring Size Table

UK USA French/German Italian Ring Circumference (mm) Ring Diameter (mm)
38.00
A 39.00 37.70 12.00
A 1/2 39.50 38.33 12.20
B 40.00 38.96 12.40
B 1/2 0.75 40.80 39.58 12.60
C 1.25 41.25 40.53 12.90
C 1/2 1.50 41.00 1.00 41.15 13.10
D 1.75 42.00 2.00 41.78 13.30
D 1/2 2.00 42.50 2.50 42.41 13.50
E 2.25 43.50 3.50 43.04 13.70
E 1/2 2.50 44.00 4.00 43.67 13.90
F 2.75 44.50 4.50 44.30 14.10
F 1/2 3.00 45.00 5.00 44.92 14.30
G 3.25 45.50 5.50 45.55 14.50
G 1/2 3.50 46.00 6.00 46.18 14.70
H 3.75 47.00 7.00 46.81 14.90
H 1/2 4.00 47.50 7.50 47.44 15.10
I 4.25 48.00 8.00 48.07 15.30
I 1/2 4.50 48.50 8.50 48.69 15.50
J 4.75 49.50 9.50 49.32 15.70
J 1/2 5.00 50.00 10.00 49.95 15.90
K 5.25 50.50 10.50 50.58 16.10
K 1/2 5.50 51.00 11.00 51.21 16.30
L 5.75 52.00 12.00 51.84 16.50
L 1/2 6.00 52.50 12.50 52.46 16.70
M 6.25 53.00 13.00 53.09 16.90
M 1/2 6.50 54.00 14.00 53.72 17.10
N 6.75 54.50 14.50 54.35 17.30
N 1/2 7.00 55.00 15.00 54.98 17.50
O 7.25 55.75 15.75 55.61 17.70
O 1/2 7.50 56.25 16.25 56.23 17.90
P 7.75 57.00 17.00 56.86 18.10
P 1/2 8.00 57.25 17.25 57.49 18.30
Q 8.25 58.00 18.00 58.12 18.50
Q 1/2 8.50 58.50 18.50 58.75 18.70
R 8.75 59.50 19.50 59.38 18.90
R 1/2 9.00 60.00 20.00 60.00 19.10
S 9.25 60.50 20.50 60.63 19.30
S 1/2 9.50 61.25 21.25 61.26 19.50
T 9.75 62.00 22.00 61.89 19.70
T 1/2 10.00 62.50 22.50 62.52 19.90
U 10.50 63.00 23.00 63.15 20.10
U 1/2 10.50 64.00 24.00 63.77 20.30
V 10.75 64.25 24.25 64.40 20.50
V 1/2 11.00 65.00 25.00 65.03 20.70
W 11.25 65.50 25.50 65.66 20.90
W 1/2 11.50 66.50 26.50 66.29 21.10
X 11.75 67.00 27.00 66.92 21.30
X 1/2 12.00 67.50 27.50 67.54 21.50
Y 12.25 68.00 28.00 68.17 21.70
Y 1/2 12.50 69.00 29.00 68.80 21.90
Z 12.75 69.50 29.50 69.43 22.10
Z 1/2 13.00 70.00 30.00 70.06 22.30

Resizing Policy

If you do not know the ring size, please leave the ring size as “I Don't Know”, and we will make the ring a standard ring size (between L – M). Once you have received the ring and are able to determine the correct size, you can send it back to us for a free first resize as long as it is within the 30 days return policy and the resize is within three sizes of the standard L-M size (see section 8 of the T&C for more details).

If you have already requested a ring size with your initial order and this turns out to be incorrect, the second resizing will be charged at our standard rate of £45 including VAT. Resizing takes approximately 3-5 working days and you will be notified should this change. Please note that during December, due to high volumes of production, we will be unable to resize your rings until January 2016.

All our rings are laser resized for a better quality finish and added strength.

77 Diamonds has updated its Privacy policy in compliance with EU Cookie Legislation. This details which cookies we use and what information we collect on our website. By using this site you consent to this use in our Privacy & Cookie Policy. Which links to our policy here.

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