HOW TO MEASURE YOUR RING SIZE
Ideally fingers should be sized properly by a professional jeweller using a ring sizer but if this is not possible you can follow these directions to measure your finger. They will give an approximate guide to establish your ring size.
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Find a piece of string or strip of paper no wider than 1.4 cm.
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Wrap it around the base of the appropriate finger.
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Use a pen to mark the point on the string/paper where it overlaps, forming a complete circle.
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With a ruler, measure the length from the starting end of the string/paper to the pen mark.
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Use the chart below to determine your UK ring size.
For the most accurate reading using this method measure the finger at the end of the day when the finger is the largest.
UK Ring Size - Measurement
G – 45.5mm
H – 46.7mm
I – 48mm
J – 48.7mm
K – 49.9mm
L – 51.2mm
M – 52.5mm
N – 53.8mm
O – 55mm
P – 56.3mm
Q – 57.6mm
R – 58.9mm
S – 60.1mm
T – 61.4mm
U – 62.7mm
V – 64mm
W – 65.2mm
X – 66.5mm