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Ring Size Guide

Please review the following ring size guide if you are in any doubt about the right ring size. This will help ensure that the ring you purchase will fit perfectly for years to come.

How To Measure Your Finger

In order to measure your finger accurately, please follow these steps

  • Place a piece of string or a paper strip around the base of your finger.
  • Mark the string or paper where it overlaps to form a complete circle.
  • Measure the length of the section of string or paper with a ruler or tape measure.
  • Take your measurement in centimetres or millimetres and compare with our chart below.

Finger Measurement Conversion Table

Compare your finger measurement with the chart below to determine your ring size.

SA & UK: Diameter mm Circumference mm American
B12.3 38.641
C12.7 39.901.5
D13.1 41.152
E13.5 42.412.5
F13.9 43.673
G14.3 44.923.25
H14.7 46.183.75
I15.1 47.444.25
J15.5 48.694.75
K15.9 49.955.25
L16.3 51.245.75
M16.7 52.466.25
N17.1 53.726.75
O17.5 54.987
P17.9 56.237.5
Q18.3 57.498
R18.7 58.758.5
S19.1 60.009
T19.5 61.269.5
U19.9 62.5210
V20.3 63.7710.5
W20.7 65.0011
X21.1 66.2911.5
Y21.5 67.5112
Z21.9 68.7712.5

Why Choose New Star Diamonds

Very simple. As diamond experts, we’re happy to teach you everything there is to know about diamonds. We’ll help you at every step along the way to make sure you end up with your perfect diamond.

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Custom Design Jewellery

If you'd like to take your ring to the next level, then I recommend you consider designing a custom ring for your loved one. It's not a complicated process, and we can help you at each step along the way to make it even easier for you.

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